sm-js-bc/dist/index.d.cts

SM2/SM3/SM4 implementation in TypeScript based on Bouncy Castle Java

/**
 * 字节打包和解包工具类
 * 用于处理大端序（Big Endian）的整数和字节数组转换
 *
 * 参考: org.bouncycastle.util.Pack
 */
declare class Pack {
    /**
     * 将字节数组转换为 32 位整数（大端序）
     *
     * @param bytes 字节数组
     * @param offset 起始偏移量
     * @returns 32位整数
     */
    static bigEndianToInt(bytes: Uint8Array, offset: number): number;
    /**
     * 将 32 位整数转换为字节数组（大端序）
     *
     * @param value 32位整数
     * @param bytes 目标字节数组
     * @param offset 起始偏移量
     */
    static intToBigEndian(value: number, bytes: Uint8Array, offset: number): void;
    /**
     * 将字节数组转换为 64 位整数（大端序）
     *
     * @param bytes 字节数组
     * @param offset 起始偏移量
     * @returns 64位大整数
     */
    static bigEndianToLong(bytes: Uint8Array, offset: number): bigint;
    /**
     * 将 64 位整数转换为字节数组（大端序）
     *
     * @param value 64位大整数
     * @param bytes 目标字节数组
     * @param offset 起始偏移量
     */
    static longToBigEndian(value: bigint, bytes: Uint8Array, offset: number): void;
}

/**
 * 数组操作工具类
 *
 * 参考: org.bouncycastle.util.Arrays
 */
declare class Arrays {
    /**
     * 连接多个字节数组
     * @param arrays 要连接的字节数组
     * @returns 连接后的字节数组
     */
    static concatenate(...arrays: Uint8Array[]): Uint8Array;
    /**
     * 用指定值填充数组
     * @param array 要填充的数组
     * @param value 填充值
     */
    static fill(array: Uint8Array, value: number): void;
    /**
     * 比较两个字节数组是否相等
     * @param a 第一个数组
     * @param b 第二个数组
     * @returns 数组是否相等
     */
    static areEqual(a: Uint8Array, b: Uint8Array): boolean;
    /**
     * 常时间比较两个字节数组是否相等（抗时序攻击）
     * @param a 第一个数组
     * @param b 第二个数组
     * @returns 数组是否相等
     */
    static constantTimeAreEqual(a: Uint8Array, b: Uint8Array): boolean;
    /**
     * 复制数组的指定范围
     * @param source 源数组
     * @param from 起始位置
     * @param to 结束位置（不包含）
     * @returns 新数组
     */
    static copyOfRange(source: Uint8Array, from: number, to: number): Uint8Array;
}

/**
 * 字节操作工具类
 *
 * 参考: org.bouncycastle.util.Bytes
 */
declare class Bytes {
    /**
     * 将源数组的指定长度与目标数组进行异或操作，结果存入目标数组
     *
     * @param length 要异或的字节数
     * @param src 源数组
     * @param srcOff 源数组起始偏移量
     * @param dest 目标数组
     * @param destOff 目标数组起始偏移量
     */
    static xorTo(length: number, src: Uint8Array, srcOff: number, dest: Uint8Array, destOff: number): void;
}

/**
 * 大整数工具类
 *
 * 参考: org.bouncycastle.util.BigIntegers
 */
declare class BigIntegers {
    static readonly ZERO = 0n;
    /**
     * 将 BigInt 转换为无符号字节数组（大端序），指定长度
     *
     * @param length 字节数组长度
     * @param value BigInt 值
     * @returns 字节数组
     */
    static asUnsignedByteArray(length: number, value: bigint): Uint8Array;
    /**
     * 将无符号字节数组转换为 BigInt（大端序）
     *
     * @param bytes 字节数组
     * @returns BigInt 值
     */
    static fromUnsignedByteArray(bytes: Uint8Array): bigint;
    /**
     * 创建指定位长度的随机 BigInt
     *
     * @param bitLength 位长度
     * @param random 随机数生成器（提供 nextBytes 方法）
     * @returns 随机 BigInt
     */
    static createRandomBigInteger(bitLength: number, random: {
        nextBytes(bytes: Uint8Array): void;
    }): bigint;
    /**
     * 计算模逆（当模数为奇数时）
     *
     * @param mod 模数
     * @param value 值
     * @returns 模逆
     */
    static modOddInverse(mod: bigint, value: bigint): bigint;
    /**
     * 计算模逆（通用方法）
     *
     * @param a 值
     * @param m 模数
     * @returns 模逆
     */
    private static modInverse;
    /**
     * 计算模幂：(base^exponent) mod m
     * 使用快速幂算法（二进制方法）
     *
     * @param base 底数
     * @param exponent 指数
     * @param m 模数
     * @returns 模幂结果
     */
    static modPow(base: bigint, exponent: bigint, m: bigint): bigint;
    /**
     * 获取 BigInt 的位长度（最高位1的位置+1）
     *
     * @param value BigInt 值
     * @returns 位长度
     */
    static bitLength(value: bigint): number;
    /**
     * 测试指定位是否为1
     *
     * @param value BigInt 值
     * @param n 位索引（从0开始，0表示最低位）
     * @returns 如果第n位为1返回true，否则返回false
     */
    static testBit(value: bigint, n: number): boolean;
    /**
     * 计算 Legendre 符号 (a/p)
     * 用于判断 a 是否为模 p 的二次剩余
     *
     * @param a 值
     * @param p 奇素数
     * @returns 1 如果 a 是二次剩余, -1 如果不是, 0 如果 a ≡ 0 (mod p)
     */
    static legendreSymbol(a: bigint, p: bigint): number;
    /**
     * 获取 BigInt 的字节长度
     *
     * @param value BigInt 值
     * @returns 字节长度
     */
    static byteLength(value: bigint): number;
    /**
     * 设置指定位为1
     *
     * @param value BigInt 值
     * @param n 位索引（从0开始）
     * @returns 设置后的值
     */
    static setBit(value: bigint, n: number): bigint;
    /**
     * 清除指定位为0
     *
     * @param value BigInt 值
     * @param n 位索引（从0开始）
     * @returns 清除后的值
     */
    static clearBit(value: bigint, n: number): bigint;
    /**
     * 翻转指定位
     *
     * @param value BigInt 值
     * @param n 位索引（从0开始）
     * @returns 翻转后的值
     */
    static flipBit(value: bigint, n: number): bigint;
    /**
     * 获取最低的n位
     *
     * @param value BigInt 值
     * @param n 位数
     * @returns 最低n位的值
     */
    static getLowestBits(value: bigint, n: number): bigint;
}

/**
 * Utility functions for integer operations.
 * Provides bit manipulation and other integer utilities similar to Java's Integer class.
 */
declare class Integers {
    /**
     * Returns the number of zero bits preceding the highest-order ("leftmost")
     * one-bit in the two's complement binary representation of the specified number.
     * Returns 32 if the number is zero.
     *
     * @param i - the value whose number of leading zero bits to compute
     * @returns the number of zero bits preceding the highest-order one-bit (0-32)
     */
    static numberOfLeadingZeros(i: number): number;
    /**
     * Returns the number of one-bits in the two's complement binary representation
     * of the specified number.
     *
     * @param i - the value whose bits to count
     * @returns the number of one-bits
     */
    static bitCount(i: number): number;
    /**
     * Returns the value obtained by rotating the two's complement binary representation
     * of the specified number left by the specified number of bits.
     *
     * @param i - the value whose bits to rotate left
     * @param distance - the number of bit positions to rotate by
     * @returns the value obtained by rotating left
     */
    static rotateLeft(i: number, distance: number): number;
    /**
     * Returns the value obtained by rotating the two's complement binary representation
     * of the specified number right by the specified number of bits.
     *
     * @param i - the value whose bits to rotate right
     * @param distance - the number of bit positions to rotate by
     * @returns the value obtained by rotating right
     */
    static rotateRight(i: number, distance: number): number;
    /**
     * Returns the number of zero bits following the lowest-order ("rightmost")
     * one-bit in the two's complement binary representation of the specified number.
     * Returns 32 if the number is zero.
     *
     * @param i - the value whose number of trailing zero bits to compute
     * @returns the number of zero bits following the lowest-order one-bit (0-32)
     */
    static numberOfTrailingZeros(i: number): number;
    /**
     * Returns the highest one bit of the specified number.
     *
     * @param i - the value whose highest one bit to compute
     * @returns the highest one bit, or 0 if i is 0
     */
    static highestOneBit(i: number): number;
    /**
     * Returns the lowest one bit of the specified number.
     *
     * @param i - the value whose lowest one bit to compute
     * @returns the lowest one bit, or 0 if i is 0
     */
    static lowestOneBit(i: number): number;
}

/**
 * 安全随机数生成器
 * 使用 Web Crypto API（浏览器和现代Node.js）
 *
 * 参考: java.security.SecureRandom
 */
declare class SecureRandom {
    /**
     * 生成随机字节填充到指定数组
     * @param bytes 要填充的字节数组
     */
    nextBytes(bytes: Uint8Array): void;
    /**
     * 生成指定长度的随机字节数组
     * @param length 字节数
     * @returns 随机字节数组
     */
    generateSeed(length: number): Uint8Array;
}

/**
 * 支持状态保存和恢复的可记忆对象接口
 *
 * 参考: org.bouncycastle.util.Memoable
 */
interface Memoable {
    /**
     * 生成当前对象的独立副本
     * @returns 对象的副本
     */
    copy(): Memoable;
    /**
     * 从另一个对象恢复状态
     * @param other 要恢复状态的源对象
     */
    resetFromMemoable(other: Memoable): void;
}

/**
 * 消息摘要算法的基础接口
 *
 * 参考: org.bouncycastle.crypto.Digest
 */
interface Digest {
    /**
     * 获取算法名称
     * @returns 算法名称
     */
    getAlgorithmName(): string;
    /**
     * 获取摘要输出的字节长度
     * @returns 摘要长度（字节）
     */
    getDigestSize(): number;
    /**
     * 更新摘要，添加单个字节
     * @param input 输入字节
     */
    update(input: number): void;
    /**
     * 更新摘要，添加字节数组
     * @param input 输入字节数组
     * @param offset 起始偏移量
     * @param length 数据长度
     */
    updateArray(input: Uint8Array, offset: number, length: number): void;
    /**
     * 完成摘要计算，输出结果
     * @param out 输出缓冲区
     * @param outOffset 输出起始位置
     * @returns 写入的字节数
     */
    doFinal(out: Uint8Array, outOffset: number): number;
    /**
     * 重置摘要状态
     */
    reset(): void;
}

/**
 * 扩展的摘要接口，提供内部状态访问
 *
 * 参考: org.bouncycastle.crypto.ExtendedDigest
 */
interface ExtendedDigest extends Digest {
    /**
     * 获取内部块大小（字节）
     * @returns 块大小
     */
    getByteLength(): number;
}

/**
 * 通用摘要算法的抽象基类
 * 实现了输入缓冲、消息长度计数等通用逻辑
 *
 * 参考: org.bouncycastle.crypto.digests.GeneralDigest
 */
declare abstract class GeneralDigest implements ExtendedDigest, Memoable {
    private static readonly BYTE_LENGTH;
    protected xBuf: Uint8Array;
    protected xBufOff: number;
    protected byteCount: bigint;
    /**
     * 构造函数
     * @param digest 可选的源摘要对象，用于复制状态
     */
    protected constructor(digest?: GeneralDigest);
    update(input: number): void;
    updateArray(input: Uint8Array, offset: number, length: number): void;
    finish(): void;
    reset(): void;
    getByteLength(): number;
    /**
     * 从另一个 GeneralDigest 复制状态（用于 Memoable）
     */
    protected copyIn(digest: GeneralDigest): void;
    /**
     * 复制当前对象
     */
    abstract copy(): Memoable;
    /**
     * 从另一个对象恢复状态
     */
    abstract resetFromMemoable(other: Memoable): void;
    /**
     * 获取算法名称
     */
    abstract getAlgorithmName(): string;
    /**
     * 获取摘要长度
     */
    abstract getDigestSize(): number;
    /**
     * 完成摘要计算
     */
    abstract doFinal(out: Uint8Array, outOffset: number): number;
    /**
     * 处理一个字（4字节）
     */
    protected abstract processWord(input: Uint8Array, offset: number): void;
    /**
     * 处理消息长度
     */
    protected abstract processLength(bitLength: bigint): void;
    /**
     * 处理一个完整的块
     */
    protected abstract processBlock(): void;
    /**
     * 重置内部状态
     */
    protected abstract resetState(): void;
}

/**
 * SM3 密码杂凑算法实现
 *
 * 标准: GB/T 32905-2016
 * 参考: org.bouncycastle.crypto.digests.SM3Digest
 */
declare class SM3Digest extends GeneralDigest {
    private static readonly DIGEST_LENGTH;
    private static readonly BLOCK_SIZE;
    private static readonly IV;
    private static readonly T;
    private V;
    private X;
    private xOff;
    constructor();
    constructor(digest: SM3Digest);
    getAlgorithmName(): string;
    getDigestSize(): number;
    getByteLength(): number;
    doFinal(out: Uint8Array, outOffset: number): number;
    reset(): void;
    reset(other: Memoable): void;
    protected resetState(): void;
    protected processWord(input: Uint8Array, offset: number): void;
    protected processLength(bitLength: bigint): void;
    protected processBlock(): void;
    private FF0;
    private FF1;
    private GG0;
    private GG1;
    private P0;
    private P1;
    private rotateLeft;
    copy(): Memoable;
    resetFromMemoable(other: Memoable): void;
    private copyInSM3;
}

/**
 * Common constants used in elliptic curve cryptography.
 *
 * Based on: org.bouncycastle.math.ec.ECConstants
 */
declare class ECConstants {
    static readonly ZERO = 0n;
    static readonly ONE = 1n;
    static readonly TWO = 2n;
    static readonly THREE = 3n;
    static readonly FOUR = 4n;
    static readonly EIGHT = 8n;
}

/**
 * Abstract base class for finite field elements.
 *
 * Based on: org.bouncycastle.math.ec.ECFieldElement
 */
/**
 * Abstract base class for all field elements.
 */
declare abstract class ECFieldElement {
    /**
     * Convert the field element to a BigInt.
     */
    abstract toBigInteger(): bigint;
    /**
     * Get the name of the field (e.g., "Fp" for prime field).
     */
    abstract getFieldName(): string;
    /**
     * Get the size of the field in bits.
     */
    abstract getFieldSize(): number;
    /**
     * Add another field element: this + b
     */
    abstract add(b: ECFieldElement): ECFieldElement;
    /**
     * Add one to this element: this + 1
     */
    abstract addOne(): ECFieldElement;
    /**
     * Subtract another field element: this - b
     */
    abstract subtract(b: ECFieldElement): ECFieldElement;
    /**
     * Multiply by another field element: this * b
     */
    abstract multiply(b: ECFieldElement): ECFieldElement;
    /**
     * Divide by another field element: this / b
     */
    abstract divide(b: ECFieldElement): ECFieldElement;
    /**
     * Negate this element: -this
     */
    abstract negate(): ECFieldElement;
    /**
     * Square this element: this^2
     */
    abstract square(): ECFieldElement;
    /**
     * Compute multiplicative inverse: this^(-1)
     */
    abstract invert(): ECFieldElement;
    /**
     * Compute square root if it exists, null otherwise.
     */
    abstract sqrt(): ECFieldElement | null;
    /**
     * Check if this element is zero.
     */
    isZero(): boolean;
    /**
     * Check if this element is one.
     */
    isOne(): boolean;
    /**
     * Test if the lowest bit is 1.
     */
    testBitZero(): boolean;
    /**
     * Encode this field element to bytes.
     *
     * @returns byte array representation
     */
    getEncoded(): Uint8Array;
    /**
     * Check equality with another field element.
     */
    equals(other: ECFieldElement): boolean;
}
/**
 * Field element for prime field Fp (integers modulo p).
 */
declare class ECFieldElementFp extends ECFieldElement {
    readonly q: bigint;
    readonly x: bigint;
    constructor(q: bigint, x: bigint);
    toBigInteger(): bigint;
    getFieldName(): string;
    getFieldSize(): number;
    /**
     * Get the prime modulus.
     */
    getQ(): bigint;
    add(b: ECFieldElement): ECFieldElement;
    addOne(): ECFieldElement;
    subtract(b: ECFieldElement): ECFieldElement;
    multiply(b: ECFieldElement): ECFieldElement;
    /**
     * Compute this * b - x * y (optimized).
     */
    multiplyMinusProduct(b: ECFieldElement, x: ECFieldElement, y: ECFieldElement): ECFieldElement;
    /**
     * Compute this * b + x * y (optimized).
     */
    multiplyPlusProduct(b: ECFieldElement, x: ECFieldElement, y: ECFieldElement): ECFieldElement;
    divide(b: ECFieldElement): ECFieldElement;
    negate(): ECFieldElement;
    square(): ECFieldElement;
    /**
     * Compute this^2 - x * y (optimized).
     */
    squareMinusProduct(x: ECFieldElement, y: ECFieldElement): ECFieldElement;
    /**
     * Compute this^2 + x * y (optimized).
     */
    squarePlusProduct(x: ECFieldElement, y: ECFieldElement): ECFieldElement;
    invert(): ECFieldElement;
    /**
     * Compute square root using Tonelli-Shanks algorithm.
     * Returns null if no square root exists.
     */
    sqrt(): ECFieldElement | null;
    /**
     * Tonelli-Shanks algorithm for computing square root in Fp.
     */
    private sqrtTonelliShanks;
    /**
     * Check if z is a square root of this element.
     */
    private checkSqrt;
    private modAdd;
    private modSubtract;
    private modMult;
    private modReduce;
    private modInverse;
    equals(other: any): boolean;
    hashCode(): number;
}

/**
 * Base interface for precomputation data.
 * Precomputation data is stored in ECPoint's preCompTable for caching.
 */
interface PreCompInfo {
}
/**
 * Callback interface for lazy precomputation.
 */
interface PreCompCallback {
    /**
     * Compute or reuse precomputation data.
     * @param existing Existing precomputation data (if any)
     * @returns New or existing precomputation data
     */
    precompute(existing: PreCompInfo | null): PreCompInfo;
}

/**
 * Base class for points on elliptic curves.
 *
 * Based on: org.bouncycastle.math.ec.ECPoint
 */

/**
 * Abstract base class for all elliptic curve points.
 */
declare abstract class ECPoint {
    protected static readonly EMPTY_ZS: ECFieldElement[];
    curve: ECCurve | null;
    x: ECFieldElement | null;
    y: ECFieldElement | null;
    zs: ECFieldElement[];
    /**
     * Precomputation table for this point (lazy-initialized).
     * Maps precomputation name to PreCompInfo.
     */
    preCompTable: Map<string, PreCompInfo> | null;
    constructor(curve: ECCurve | null, x: ECFieldElement | null, y: ECFieldElement | null, zs?: ECFieldElement[]);
    /**
     * Get initial z-coordinates based on curve coordinate system.
     */
    protected static getInitialZCoords(curve: ECCurve | null): ECFieldElement[];
    /**
     * Check if this point satisfies the curve equation.
     */
    protected abstract satisfiesCurveEquation(): boolean;
    /**
     * Get the detached point (normalized and detached from curve).
     */
    getDetachedPoint(): ECPoint;
    /**
     * Get the curve.
     */
    getCurve(): ECCurve;
    /**
     * Detach point from curve.
     */
    protected abstract detach(): ECPoint;
    /**
     * Get curve coordinate system.
     */
    protected getCurveCoordinateSystem(): CoordinateSystem;
    /**
     * Get affine x-coordinate (requires normalized point).
     */
    getAffineXCoord(): ECFieldElement;
    /**
     * Get affine y-coordinate (requires normalized point).
     */
    getAffineYCoord(): ECFieldElement;
    /**
     * Get x-coordinate (may be projective).
     */
    getXCoord(): ECFieldElement;
    /**
     * Get y-coordinate (may be projective).
     */
    getYCoord(): ECFieldElement;
    /**
     * Get z-coordinate at index.
     */
    getZCoord(index: number): ECFieldElement;
    /**
     * Get all z-coordinates.
     */
    getZCoords(): ECFieldElement[];
    /**
     * Get raw x-coordinate (without checking).
     */
    getRawXCoord(): ECFieldElement | null;
    /**
     * Get raw y-coordinate (without checking).
     */
    getRawYCoord(): ECFieldElement | null;
    /**
     * Get raw z-coordinates (without checking).
     */
    protected getRawZCoords(): ECFieldElement[];
    /**
     * Check that point is normalized.
     */
    protected checkNormalized(): void;
    /**
     * Check if point is normalized (affine or z=1).
     */
    isNormalized(): boolean;
    /**
     * Normalize point to affine coordinates.
     */
    normalize(): ECPoint;
    /**
     * Normalize with pre-computed z-inverse.
     */
    normalizeWithZInv(zInv: ECFieldElement): ECPoint;
    /**
     * Create scaled point.
     */
    protected createScaledPoint(sx: ECFieldElement, sy: ECFieldElement): ECPoint;
    /**
     * Check if this is the point at infinity.
     */
    isInfinity(): boolean;
    /**
     * Check if point is valid (lies on curve and satisfies order).
     */
    isValid(): boolean;
    /**
     * Get compression Y tilde (for compressed encoding).
     */
    protected abstract getCompressionYTilde(): boolean;
    /**
     * Add another point.
     */
    abstract add(b: ECPoint): ECPoint;
    /**
     * Negate this point.
     */
    abstract negate(): ECPoint;
    /**
     * Subtract another point.
     */
    subtract(b: ECPoint): ECPoint;
    /**
     * Double this point.
     */
    abstract twice(): ECPoint;
    /**
     * Double this point e times.
     */
    timesPow2(e: number): ECPoint;
    /**
     * Compute 2*this + b.
     */
    twicePlus(b: ECPoint): ECPoint;
    /**
     * Compute 3*this.
     */
    threeTimes(): ECPoint;
    /**
     * Multiply by scalar (will use curve's multiplier).
     */
    multiply(k: bigint): ECPoint;
    /**
     * Simple double-and-add multiplication algorithm.
     */
    private simpleMultiply;
    /**
     * Check equality.
     */
    equals(other: ECPoint | null): boolean;
    /**
     * Get hash code.
     */
    hashCode(): number;
    /**
     * Convert to string.
     */
    toString(): string;
    /**
     * Get encoded point.
     */
    getEncoded(compressed: boolean): Uint8Array;
}
/**
 * Abstract base class for points over prime field Fp.
 */
declare abstract class ECPointAbstractFp extends ECPoint {
    constructor(curve: ECCurve | null, x: ECFieldElement | null, y: ECFieldElement | null, zs?: ECFieldElement[]);
    protected getCompressionYTilde(): boolean;
    protected satisfiesCurveEquation(): boolean;
}
/**
 * Elliptic curve point over prime field Fp.
 */
declare class ECPointFp extends ECPointAbstractFp {
    constructor(curve: ECCurve | null, x: ECFieldElement | null, y: ECFieldElement | null, zs?: ECFieldElement[]);
    protected detach(): ECPoint;
    getZCoord(index: number): ECFieldElement;
    /**
     * Get Jacobian Modified W coordinate.
     */
    private getJacobianModifiedW;
    /**
     * Calculate W coordinate for Jacobian Modified.
     * W = a * Z^4 (but simplified to 'a' when Z=1)
     */
    private calculateJacobianModifiedW;
    add(b: ECPoint): ECPoint;
    twice(): ECPoint;
    /**
     * Doubling in Jacobian Modified coordinates.
     */
    private twiceJacobianModified;
    negate(): ECPoint;
}

/**
 * Abstract interface for EC point lookup tables.
 * Used for efficient constant-time point multiplication.
 */
interface ECLookupTable {
    /**
     * Get the size of the lookup table.
     */
    getSize(): number;
    /**
     * Look up a point by index (constant-time).
     * @param index The index to lookup
     */
    lookup(index: number): ECPoint;
    /**
     * Look up a point by index (variable-time, may be faster but not constant-time).
     * @param index The index to lookup
     */
    lookupVar(index: number): ECPoint;
}

/**
 * Base class for elliptic curves.
 *
 * Based on: org.bouncycastle.math.ec.ECCurve
 */

/**
 * Coordinate system constants.
 */
declare enum CoordinateSystem {
    AFFINE = 0,
    HOMOGENEOUS = 1,
    JACOBIAN = 2,
    JACOBIAN_CHUDNOVSKY = 3,
    JACOBIAN_MODIFIED = 4,
    LAMBDA_AFFINE = 5,
    LAMBDA_PROJECTIVE = 6,
    SKEWED = 7
}
/**
 * Abstract base class for all elliptic curves.
 */
declare abstract class ECCurve {
    protected a: ECFieldElement;
    protected b: ECFieldElement;
    protected order: bigint | null;
    protected cofactor: bigint | null;
    protected coord: CoordinateSystem;
    constructor(order?: bigint | null, cofactor?: bigint | null);
    /**
     * Get the size of the field in bits.
     */
    abstract getFieldSize(): number;
    /**
     * Create a field element from a BigInt.
     */
    abstract fromBigInteger(x: bigint): ECFieldElement;
    /**
     * Check if a value is a valid field element.
     */
    abstract isValidFieldElement(x: bigint): boolean;
    /**
     * Create a random field element.
     */
    abstract randomFieldElement(r: SecureRandom): ECFieldElement;
    /**
     * Create a random non-zero field element (for multiplication).
     */
    abstract randomFieldElementMult(r: SecureRandom): ECFieldElement;
    /**
     * Get the field element encoding length in bytes.
     */
    getFieldElementEncodingLength(): number;
    /**
     * Get the affine point encoding length.
     */
    getAffinePointEncodingLength(compressed: boolean): number;
    /**
     * Create a point and validate it lies on the curve.
     */
    validatePoint(x: bigint, y: bigint): ECPoint;
    /**
     * Create a point on the curve.
     */
    abstract createPoint(x: bigint, y: bigint): ECPoint;
    /**
     * Create a raw point (without validation).
     */
    abstract createRawPoint(x: ECFieldElement, y: ECFieldElement): ECPoint;
    /**
     * Create a raw point with z-coordinates.
     */
    abstract createRawPoint(x: ECFieldElement, y: ECFieldElement, zs: ECFieldElement[]): ECPoint;
    /**
     * Clone this curve.
     */
    protected abstract cloneCurve(): ECCurve;
    /**
     * Check if a coordinate system is supported.
     */
    supportsCoordinateSystem(coord: CoordinateSystem): boolean;
    /**
     * Get the coordinate system.
     */
    getCoordinateSystem(): CoordinateSystem;
    /**
     * Import a point from another curve.
     */
    importPoint(p: ECPoint): ECPoint;
    /**
     * Normalize all points in an array.
     */
    normalizeAll(points: ECPoint[]): void;
    /**
     * Normalize a range of points with optional iso scaling.
     */
    normalizeAllWithRange(points: ECPoint[], off: number, len: number, iso: ECFieldElement | null): void;
    /**
     * Precompute and cache data for a point.
     * @param point The point to precompute for
     * @param name The name of the precomputation (e.g., "bc_fixed_point")
     * @param callback The callback that performs the actual precomputation
     * @returns The precomputed data
     */
    precompute(point: ECPoint, name: string, callback: PreCompCallback): PreCompInfo;
    /**
     * Create a cache-safe lookup table from an array of points.
     * Points must already be normalized.
     * @param points The array of points
     * @param off The offset in the array
     * @param len The number of points
     */
    createCacheSafeLookupTable(points: ECPoint[], off: number, len: number): ECLookupTable;
    /**
     * Get the point at infinity.
     */
    abstract getInfinity(): ECPoint;
    /**
     * Get the curve parameter a.
     */
    getA(): ECFieldElement;
    /**
     * Get the curve parameter b.
     */
    getB(): ECFieldElement;
    /**
     * Get the order of the curve.
     */
    getOrder(): bigint | null;
    /**
     * Get the cofactor of the curve.
     */
    getCofactor(): bigint | null;
    /**
     * Decode a point from bytes.
     */
    abstract decodePoint(encoded: Uint8Array): ECPoint;
    /**
     * Check a single point.
     */
    protected checkPoint(point: ECPoint): void;
    /**
     * Check an array of points.
     */
    protected checkPoints(points: ECPoint[], off?: number, len?: number): void;
    /**
     * Check equality with another curve.
     */
    equals(other: ECCurve): boolean;
    /**
     * Get hash code.
     */
    hashCode(): number;
}
/**
 * Abstract base class for curves over prime fields Fp.
 */
declare abstract class ECCurveAbstractFp extends ECCurve {
    protected q: bigint;
    constructor(q: bigint, order?: bigint | null, cofactor?: bigint | null);
    /**
     * Get the prime modulus.
     */
    getQ(): bigint;
    getFieldSize(): number;
    isValidFieldElement(x: bigint): boolean;
    randomFieldElement(r: SecureRandom): ECFieldElement;
    randomFieldElementMult(r: SecureRandom): ECFieldElement;
    /**
     * Decompress a point from compressed format.
     */
    protected decompressPoint(yTilde: number, X1: bigint): ECPoint;
    private implRandomFieldElement;
    private implRandomFieldElementMult;
}
/**
 * Elliptic curve over prime field Fp: y^2 = x^3 + ax + b (mod p)
 */
declare class ECCurveFp extends ECCurveAbstractFp {
    private static readonly FP_DEFAULT_COORDS;
    private r;
    private _infinity;
    /**
     * Constructor for Fp curve.
     *
     * @param q - The prime modulus
     * @param a - Curve parameter a
     * @param b - Curve parameter b
     * @param order - Order of the base point (optional)
     * @param cofactor - Cofactor (optional)
     */
    constructor(q: bigint, a: bigint, b: bigint, order?: bigint | null, cofactor?: bigint | null);
    /**
     * Lazy getter for infinity point to avoid circular dependency.
     */
    private get infinity();
    /**
     * Setter for infinity point (used in createInternal).
     */
    private set infinity(value);
    /**
     * Internal constructor with pre-computed values.
     */
    private static createInternal;
    /**
     * Calculate residue for Montgomery reduction optimization.
     */
    private calculateResidue;
    protected cloneCurve(): ECCurve;
    supportsCoordinateSystem(coord: CoordinateSystem): boolean;
    getQ(): bigint;
    getFieldSize(): number;
    fromBigInteger(x: bigint): ECFieldElement;
    createRawPoint(x: ECFieldElement, y: ECFieldElement, zs?: ECFieldElement[]): ECPoint;
    createPoint(x: bigint, y: bigint): ECPoint;
    /**
     * Import a point, with optimization for Jacobian coordinates.
     */
    importPoint(p: ECPoint): ECPoint;
    getInfinity(): ECPoint;
    /**
     * Set the infinity point (called after ECPoint is implemented).
     */
    setInfinity(infinity: ECPoint): void;
    /**
     * Decode a point from byte array.
     *
     * Format:
     * - 0x00: Point at infinity
     * - 0x02/0x03: Compressed point (x-coordinate + sign bit)
     * - 0x04: Uncompressed point (x-coordinate + y-coordinate)
     * - 0x06/0x07: Hybrid format (uncompressed + sign bit)
     */
    decodePoint(encoded: Uint8Array): ECPoint;
}

/**
 * Point multiplier interfaces and implementations.
 *
 * Based on: org.bouncycastle.math.ec.ECMultiplier
 */

/**
 * Interface for point multiplication algorithms.
 */
interface ECMultiplier {
    /**
     * Multiply point p by scalar k.
     *
     * @param p - The point to multiply
     * @param k - The scalar multiplier
     * @returns k * p
     */
    multiply(p: ECPoint, k: bigint): ECPoint;
}
/**
 * Abstract base class for EC multipliers.
 */
declare abstract class AbstractECMultiplier implements ECMultiplier {
    multiply(p: ECPoint, k: bigint): ECPoint;
    /**
     * Multiply by positive scalar.
     */
    protected abstract multiplyPositive(p: ECPoint, k: bigint): ECPoint;
    /**
     * Check result validity.
     */
    protected checkResult(p: ECPoint): ECPoint;
}
/**
 * Fixed-point comb multiplier for efficient multiplication.
 * Uses precomputed lookup tables for fast scalar multiplication.
 * Based on: org.bouncycastle.math.ec.FixedPointCombMultiplier
 */
declare class FixedPointCombMultiplier extends AbstractECMultiplier {
    protected multiplyPositive(p: ECPoint, k: bigint): ECPoint;
}
/**
 * Simple double-and-add multiplier (for reference).
 */
declare class SimpleECMultiplier extends AbstractECMultiplier {
    protected multiplyPositive(p: ECPoint, k: bigint): ECPoint;
}

/**
 * Base interface for cipher parameters.
 *
 * Based on: org.bouncycastle.crypto.CipherParameters
 */
/**
 * Marker interface for all cipher parameters.
 */
interface CipherParameters$1 {
}

/**
 * Base class for asymmetric key parameters.
 *
 * Based on: org.bouncycastle.crypto.params.AsymmetricKeyParameter
 */

declare abstract class AsymmetricKeyParameter implements CipherParameters$1 {
    private readonly privateKey;
    constructor(privateKey: boolean);
    isPrivate(): boolean;
}

/**
 * Elliptic curve domain parameters.
 *
 * Based on: org.bouncycastle.crypto.params.ECDomainParameters
 */

declare class ECDomainParameters {
    private readonly curve;
    private readonly G;
    private readonly n;
    private readonly h;
    private readonly seed;
    constructor(curve: ECCurve, G: ECPoint, n: bigint, h?: bigint, seed?: Uint8Array | null);
    getCurve(): ECCurve;
    getG(): ECPoint;
    getN(): bigint;
    getH(): bigint;
    getSeed(): Uint8Array | null;
    equals(other: any): boolean;
    hashCode(): number;
}

/**
 * Base class for EC key parameters.
 *
 * Based on: org.bouncycastle.crypto.params.ECKeyParameters
 */

declare abstract class ECKeyParameters extends AsymmetricKeyParameter {
    private readonly parameters;
    constructor(privateKey: boolean, parameters: ECDomainParameters);
    getParameters(): ECDomainParameters;
}

/**
 * EC public key parameters.
 *
 * Based on: org.bouncycastle.crypto.params.ECPublicKeyParameters
 */

declare class ECPublicKeyParameters extends ECKeyParameters {
    private readonly Q;
    constructor(Q: ECPoint, parameters: ECDomainParameters);
    getQ(): ECPoint;
}

/**
 * EC private key parameters.
 *
 * Based on: org.bouncycastle.crypto.params.ECPrivateKeyParameters
 */

declare class ECPrivateKeyParameters extends ECKeyParameters {
    private readonly d;
    constructor(d: bigint, parameters: ECDomainParameters);
    getD(): bigint;
}

/**
 * Wraps cipher parameters with random source.
 *
 * Based on: org.bouncycastle.crypto.params.ParametersWithRandom
 */

declare class ParametersWithRandom implements CipherParameters$1 {
    private readonly parameters;
    private readonly random;
    constructor(parameters: CipherParameters$1, random?: SecureRandom);
    getParameters(): CipherParameters$1;
    getRandom(): SecureRandom;
}

/**
 * Parameters wrapper that includes a user ID.
 *
 * This class wraps cipher parameters and associates them with a user ID,
 * which is commonly used in SM2 signatures for calculating the Z_A value.
 *
 * Based on: Bouncy Castle pattern for parameter wrapping
 */

/**
 * Cipher parameters with associated user ID.
 */
declare class ParametersWithID implements CipherParameters$1 {
    private readonly parameters;
    private readonly id;
    /**
     * Create parameters with user ID.
     *
     * @param parameters - the underlying cipher parameters
     * @param id - user ID bytes
     */
    constructor(parameters: CipherParameters$1, id: Uint8Array);
    /**
     * Get the underlying parameters.
     */
    getParameters(): CipherParameters$1;
    /**
     * Get the user ID.
     */
    getID(): Uint8Array;
}

/**
 * Key Derivation Function based on SM3.
 *
 * Based on: org.bouncycastle.crypto.agreement.kdf.ECDHKEKGenerator
 */
declare class KDF {
    private readonly digest;
    constructor();
    /**
     * Derive key material from shared secret.
     *
     * @param Z - Shared secret (x || y coordinates)
     * @param klen - Required key length in bytes
     * @returns Derived key material
     */
    deriveKey(Z: Uint8Array, klen: number): Uint8Array;
    /**
     * Check if all bytes are zero (used in decryption).
     */
    static isZero(data: Uint8Array): boolean;
}

/**
 * SM2 curve and domain parameters.
 *
 * Based on GM/T 0003-2012 and GMNamedCurves.java
 */

/**
 * SM2 elliptic curve parameters (SM2P256V1).
 */
declare class SM2 {
    private static readonly p;
    private static readonly a;
    private static readonly b;
    private static readonly n;
    private static readonly h;
    private static readonly Gx;
    private static readonly Gy;
    private static domainParams;
    /**
     * Get SM2 domain parameters.
     */
    static getParameters(): ECDomainParameters;
    /**
     * Get curve.
     */
    static getCurve(): ECCurveFp;
    /**
     * Get base point G.
     */
    static getG(): ECPoint;
    /**
     * Get order n.
     */
    static getN(): bigint;
    /**
     * Get cofactor h.
     */
    static getH(): bigint;
    /**
     * Validate public key point.
     */
    static validatePublicKey(Q: ECPoint): boolean;
    /**
     * Validate private key.
     */
    static validatePrivateKey(d: bigint): boolean;
    /**
     * Generate SM2 key pair.
     * @returns Object containing private key (BigInt) and public key coordinates {x, y}
     */
    static generateKeyPair(): {
        privateKey: bigint;
        publicKey: {
            x: bigint;
            y: bigint;
        };
    };
    /**
     * Encrypt plaintext using SM2 public key.
     * @param message - Message to encrypt (string or Uint8Array)
     * @param publicKey - Public key object with x and y coordinates, or separate x, y coordinates
     * @param publicKeyY - Public key Y coordinate (if first parameter is not an object)
     * @returns Encrypted ciphertext as Uint8Array
     */
    static encrypt(message: string | Uint8Array, publicKey: {
        x: bigint;
        y: bigint;
    } | bigint, publicKeyY?: bigint): Uint8Array;
    /**
     * Decrypt ciphertext using SM2 private key.
     * @param ciphertext - Ciphertext to decrypt
     * @param privateKey - Private key
     * @returns Decrypted plaintext as Uint8Array
     */
    static decrypt(ciphertext: Uint8Array, privateKey: bigint): Uint8Array;
    /**
     * Sign a message using SM2 private key.
     * @param message - Message to sign (string or Uint8Array)
     * @param privateKey - Private key for signing
     * @returns Signature as Uint8Array
     */
    static sign(message: string | Uint8Array, privateKey: bigint): Uint8Array;
    /**
     * Verify a signature using SM2 public key.
     * @param message - Original message (string or Uint8Array)
     * @param signature - Signature to verify
     * @param publicKey - Public key object with x and y coordinates, or separate x, y coordinates
     * @param publicKeyY - Public key Y coordinate (if first parameter is not an object)
     * @returns true if signature is valid, false otherwise
     */
    static verify(message: string | Uint8Array, signature: Uint8Array, publicKey: {
        x: bigint;
        y: bigint;
    } | bigint, publicKeyY?: bigint): boolean;
}

/**
 * SM4 高级 API - 提供便捷的加密/解密接口
 *
 * SM4 是一个 128 位分组密码算法，使用 128 位密钥
 *
 * 标准: GB/T 32907-2016
 *
 * @example
 * ```typescript
 * // 生成密钥
 * const key = SM4.generateKey();
 *
 * // 加密数据（ECB模式）
 * const plaintext = new TextEncoder().encode('Hello, SM4!');
 * const ciphertext = SM4.encrypt(plaintext, key);
 *
 * // 解密数据
 * const decrypted = SM4.decrypt(ciphertext, key);
 * const message = new TextDecoder().decode(decrypted);
 * ```
 */
declare class SM4 {
    private static readonly KEY_SIZE;
    private static readonly BLOCK_SIZE;
    /**
     * 生成随机的 SM4 密钥（128位）
     *
     * @returns 16字节的随机密钥
     */
    static generateKey(): Uint8Array;
    /**
     * 加密数据（ECB模式，PKCS7填充）
     *
     * 注意：ECB模式不安全，仅用于演示和兼容性测试。
     * 生产环境请使用 CBC、CTR 或 GCM 模式。
     *
     * @param plaintext - 明文数据
     * @param key - 128位密钥
     * @returns 密文数据（包含填充）
     */
    static encrypt(plaintext: Uint8Array, key: Uint8Array): Uint8Array;
    /**
     * 解密数据（ECB模式，PKCS7填充）
     *
     * @param ciphertext - 密文数据
     * @param key - 128位密钥
     * @returns 明文数据（已移除填充）
     */
    static decrypt(ciphertext: Uint8Array, key: Uint8Array): Uint8Array;
    /**
     * 加密单个块（无填充）
     *
     * 适用于需要直接控制加密过程的场景。
     * 输入数据必须正好是 16 字节。
     *
     * @param block - 16字节的数据块
     * @param key - 128位密钥
     * @returns 16字节的加密块
     */
    static encryptBlock(block: Uint8Array, key: Uint8Array): Uint8Array;
    /**
     * 解密单个块（无填充）
     *
     * @param block - 16字节的加密块
     * @param key - 128位密钥
     * @returns 16字节的明文块
     */
    static decryptBlock(block: Uint8Array, key: Uint8Array): Uint8Array;
    /**
     * PKCS7 填充
     *
     * @param data - 原始数据
     * @param blockSize - 块大小
     * @returns 填充后的数据
     */
    private static pkcs7Padding;
    /**
     * 移除 PKCS7 填充
     *
     * @param data - 填充后的数据
     * @returns 原始数据
     */
    private static pkcs7Unpadding;
}

/**
 * All parameter classes implement this interface.
 *
 * 参考: org.bouncycastle.crypto.CipherParameters
 */
interface CipherParameters {
}

/**
 * Block cipher engines are expected to conform to this interface.
 *
 * 参考: org.bouncycastle.crypto.BlockCipher
 */
interface BlockCipher {
    /**
     * Initialize the cipher.
     *
     * @param forEncryption - if true the cipher is initialized for encryption,
     *                        if false for decryption.
     * @param params - the key and other data required by the cipher.
     * @throws Error if the params argument is inappropriate.
     */
    init(forEncryption: boolean, params: CipherParameters): void;
    /**
     * Return the name of the algorithm the cipher implements.
     *
     * @returns the name of the algorithm the cipher implements.
     */
    getAlgorithmName(): string;
    /**
     * Return the block size for this cipher (in bytes).
     *
     * @returns the block size for this cipher in bytes.
     */
    getBlockSize(): number;
    /**
     * Process one block of input from the array in and write it to
     * the out array.
     *
     * @param input - the array containing the input data.
     * @param inOff - offset into the in array the data starts at.
     * @param output - the array the output data will be copied into.
     * @param outOff - the offset into the out array the output will start at.
     * @returns the number of bytes processed and produced.
     * @throws DataLengthException if there isn't enough data in input, or
     *         space in output.
     * @throws Error if the cipher isn't initialized.
     */
    processBlock(input: Uint8Array, inOff: number, output: Uint8Array, outOff: number): number;
    /**
     * Reset the cipher. After resetting the cipher is in the same state
     * as it was after the last init (if there was one).
     */
    reset(): void;
}

/**
 * SM4 Block Cipher - SM4 is a 128 bit block cipher with a 128 bit key.
 *
 * The implementation here is based on the document https://eprint.iacr.org/2008/329.pdf
 * by Whitfield Diffie and George Ledin, which is a translation of Prof. LU Shu-wang's original standard.
 *
 * 标准: GB/T 32907-2016
 * 参考: org.bouncycastle.crypto.engines.SM4Engine
 */
declare class SM4Engine implements BlockCipher {
    private static readonly BLOCK_SIZE;
    private static readonly Sbox;
    private static readonly CK;
    private static readonly FK;
    private readonly X;
    private rk;
    /**
     * Initialize the cipher.
     *
     * @param forEncryption - true for encryption, false for decryption
     * @param params - the key parameter
     */
    init(forEncryption: boolean, params: CipherParameters): void;
    /**
     * Return the algorithm name.
     *
     * @returns "SM4"
     */
    getAlgorithmName(): string;
    /**
     * Return the block size (16 bytes).
     *
     * @returns 16
     */
    getBlockSize(): number;
    /**
     * Process one block of data.
     *
     * @param input - input data
     * @param inOff - offset in input
     * @param output - output buffer
     * @param outOff - offset in output
     * @returns number of bytes processed (16)
     */
    processBlock(input: Uint8Array, inOff: number, output: Uint8Array, outOff: number): number;
    /**
     * Reset the cipher.
     */
    reset(): void;
    /**
     * 循环左移
     *
     * @param x - 要移位的值
     * @param bits - 移位位数
     * @returns 移位后的值
     */
    private rotateLeft;
    /**
     * 非线性变换 τ (tau)
     * S盒替换
     *
     * @param A - 输入值
     * @returns 变换后的值
     */
    private tau;
    /**
     * 线性变换 L' (用于密钥扩展)
     *
     * @param B - 输入值
     * @returns 变换后的值
     */
    private L_ap;
    /**
     * 合成置换 T' (用于密钥扩展)
     * T'(Z) = L'(τ(Z))
     *
     * @param Z - 输入值
     * @returns 变换后的值
     */
    private T_ap;
    /**
     * 密钥扩展算法
     *
     * @param forEncryption - true for encryption, false for decryption
     * @param key - 128位密钥
     * @returns 32个轮密钥
     */
    private expandKey;
    /**
     * 线性变换 L (用于加密轮函数)
     *
     * @param B - 输入值
     * @returns 变换后的值
     */
    private L;
    /**
     * 合成置换 T (用于加密轮函数)
     * T(Z) = L(τ(Z))
     *
     * @param Z - 输入值
     * @returns 变换后的值
     */
    private T;
    /**
     * 轮函数 F0
     *
     * @param X - 状态数组
     * @param rk - 轮密钥
     * @returns 新的 X[0]
     */
    private F0;
    /**
     * 轮函数 F1
     *
     * @param X - 状态数组
     * @param rk - 轮密钥
     * @returns 新的 X[1]
     */
    private F1;
    /**
     * 轮函数 F2
     *
     * @param X - 状态数组
     * @param rk - 轮密钥
     * @returns 新的 X[2]
     */
    private F2;
    /**
     * 轮函数 F3
     *
     * @param X - 状态数组
     * @param rk - 轮密钥
     * @returns 新的 X[3]
     */
    private F3;
}

/**
 * KeyParameter class for holding a symmetric key.
 *
 * 参考: org.bouncycastle.crypto.params.KeyParameter
 */
declare class KeyParameter implements CipherParameters {
    private readonly key;
    /**
     * Create a KeyParameter from a byte array.
     *
     * @param key - the key data
     */
    constructor(key: Uint8Array);
    /**
     * Return the key data.
     *
     * @returns the key bytes
     */
    getKey(): Uint8Array;
}

/**
 * Cipher parameters with an initialization vector.
 *
 * 参考: org.bouncycastle.crypto.params.ParametersWithIV
 */
declare class ParametersWithIV implements CipherParameters {
    private readonly parameters;
    private readonly iv;
    /**
     * Create parameters with IV.
     *
     * @param parameters - the underlying parameters
     * @param iv - the initialization vector
     */
    constructor(parameters: CipherParameters, iv: Uint8Array);
    /**
     * Get the initialization vector.
     *
     * @returns the IV
     */
    getIV(): Uint8Array;
    /**
     * Get the underlying parameters.
     *
     * @returns the parameters
     */
    getParameters(): CipherParameters;
}

/**
 * Parameters for AEAD (Authenticated Encryption with Associated Data) modes.
 * Used with modes like GCM that provide both encryption and authentication.
 *
 * @see BouncyCastle AEADParameters.java
 */
declare class AEADParameters implements CipherParameters {
    private key;
    private nonce;
    private macSize;
    private associatedText;
    /**
     * Create AEAD parameters.
     *
     * @param key - The cipher key
     * @param macSize - The MAC/tag size in bits (must be multiple of 8)
     * @param nonce - The nonce/IV
     * @param associatedText - Optional additional authenticated data (AAD)
     */
    constructor(key: KeyParameter, macSize: number, nonce: Uint8Array, associatedText?: Uint8Array | null);
    /**
     * Get the cipher key.
     */
    getKey(): KeyParameter;
    /**
     * Get the MAC size in bits.
     */
    getMacSize(): number;
    /**
     * Get the nonce/IV.
     */
    getNonce(): Uint8Array;
    /**
     * Get the associated text (additional authenticated data).
     */
    getAssociatedText(): Uint8Array | null;
}

/**
 * ECB (Electronic Codebook) 模式实现
 *
 * 警告：ECB 模式不安全，不应在生产环境中使用。
 * 相同的明文块总是加密为相同的密文块，这会泄露信息模式。
 *
 * 此实现仅用于：
 * - 与旧系统的兼容性
 * - 测试和教学目的
 *
 * 参考: org.bouncycastle.crypto.modes.ECBBlockCipher
 */
declare class ECBBlockCipher implements BlockCipher {
    private cipher;
    private blockSize;
    constructor(cipher: BlockCipher);
    /**
     * 返回底层密码
     */
    getUnderlyingCipher(): BlockCipher;
    /**
     * 初始化密码
     *
     * @param encrypting - true 表示加密，false 表示解密
     * @param params - 密码参数
     */
    init(encrypting: boolean, params: CipherParameters$1): void;
    /**
     * 返回算法名称
     */
    getAlgorithmName(): string;
    /**
     * 返回块大小（字节）
     */
    getBlockSize(): number;
    /**
     * 处理一个数据块
     *
     * @param input - 输入数据
     * @param inOff - 输入偏移量
     * @param output - 输出缓冲区
     * @param outOff - 输出偏移量
     * @returns 处理的字节数
     */
    processBlock(input: Uint8Array, inOff: number, output: Uint8Array, outOff: number): number;
    /**
     * 重置密码到初始状态
     */
    reset(): void;
}

/**
 * Cipher Block Chaining (CBC) mode.
 *
 * 参考: org.bouncycastle.crypto.modes.CBCBlockCipher
 */
declare class CBCBlockCipher implements BlockCipher {
    private readonly cipher;
    private readonly blockSize;
    private IV;
    private cbcV;
    private cbcNextV;
    private encrypting;
    /**
     * Basic constructor.
     *
     * @param cipher - the block cipher to be used as the basis of chaining
     */
    constructor(cipher: BlockCipher);
    /**
     * Return the underlying block cipher that we are wrapping.
     *
     * @returns the underlying block cipher
     */
    getUnderlyingCipher(): BlockCipher;
    /**
     * Initialize the cipher and, possibly, the initialization vector (IV).
     * If an IV isn't passed as part of the parameter, the IV will be all zeros.
     *
     * @param forEncryption - true for encryption, false for decryption
     * @param params - the key and other data required by the cipher
     */
    init(forEncryption: boolean, params: CipherParameters): void;
    /**
     * Return the algorithm name and mode.
     *
     * @returns the name of the underlying algorithm followed by "/CBC"
     */
    getAlgorithmName(): string;
    /**
     * Return the block size of the underlying cipher.
     *
     * @returns the block size
     */
    getBlockSize(): number;
    /**
     * Process one block of input from the array in and write it to the out array.
     *
     * @param input - the array containing the input data
     * @param inOff - offset into the in array the data starts at
     * @param output - the array the output data will be copied into
     * @param outOff - the offset into the out array the output will start at
     * @returns the number of bytes processed and produced
     */
    processBlock(input: Uint8Array, inOff: number, output: Uint8Array, outOff: number): number;
    /**
     * Reset the chaining vector back to the IV and reset the underlying cipher.
     */
    reset(): void;
    /**
     * Do the appropriate chaining step for CBC mode encryption.
     *
     * @param input - the array containing the data to be encrypted
     * @param inOff - offset into the in array the data starts at
     * @param output - the array the encrypted data will be copied into
     * @param outOff - the offset into the out array the output will start at
     * @returns the number of bytes processed and produced
     */
    private encryptBlock;
    /**
     * Do the appropriate chaining step for CBC mode decryption.
     *
     * @param input - the array containing the data to be decrypted
     * @param inOff - offset into the in array the data starts at
     * @param output - the array the decrypted data will be copied into
     * @param outOff - the offset into the out array the output will start at
     * @returns the number of bytes processed and produced
     */
    private decryptBlock;
}

/**
 * Segmented Integer Counter (SIC) mode, also known as CTR mode.
 *
 * 参考: org.bouncycastle.crypto.modes.SICBlockCipher
 */
declare class SICBlockCipher implements BlockCipher {
    private readonly cipher;
    private re