diff options
Diffstat (limited to 'crypto/src/crypto/util/Pack.cs')
| -rw-r--r-- | crypto/src/crypto/util/Pack.cs | 98 |
1 files changed, 72 insertions, 26 deletions
diff --git a/crypto/src/crypto/util/Pack.cs b/crypto/src/crypto/util/Pack.cs index 30b4ec8ae..8ba738d4f 100644 --- a/crypto/src/crypto/util/Pack.cs +++ b/crypto/src/crypto/util/Pack.cs @@ -20,11 +20,41 @@ namespace Org.BouncyCastle.Crypto.Utilities bs[off + 1] = (byte)(n); } - internal static ushort BE_To_UInt16(byte[] bs) + internal static void UInt16_To_BE(ushort[] ns, byte[] bs, int off) { - uint n = (uint)bs[0] << 8 - | (uint)bs[1]; - return (ushort)n; + for (int i = 0; i < ns.Length; ++i) + { + UInt16_To_BE(ns[i], bs, off); + off += 2; + } + } + + internal static void UInt16_To_BE(ushort[] ns, int nsOff, int nsLen, byte[] bs, int bsOff) + { + for (int i = 0; i < nsLen; ++i) + { + UInt16_To_BE(ns[nsOff + i], bs, bsOff); + bsOff += 2; + } + } + + internal static byte[] UInt16_To_BE(ushort n) + { + byte[] bs = new byte[2]; + UInt16_To_BE(n, bs, 0); + return bs; + } + + internal static byte[] UInt16_To_BE(ushort[] ns) + { + return UInt16_To_BE(ns, 0, ns.Length); + } + + internal static byte[] UInt16_To_BE(ushort[] ns, int nsOff, int nsLen) + { + byte[] bs = new byte[2 * nsLen]; + UInt16_To_BE(ns, nsOff, nsLen, bs, 0); + return bs; } internal static ushort BE_To_UInt16(byte[] bs, int off) @@ -34,11 +64,27 @@ namespace Org.BouncyCastle.Crypto.Utilities return (ushort)n; } - internal static byte[] UInt32_To_BE(uint n) + internal static void BE_To_UInt16(byte[] bs, int bsOff, ushort[] ns, int nsOff) { - byte[] bs = new byte[4]; - UInt32_To_BE(n, bs, 0); - return bs; + ns[nsOff] = BE_To_UInt16(bs, bsOff); + } + + internal static ushort[] BE_To_UInt16(byte[] bs) + { + return BE_To_UInt16(bs, 0, bs.Length); + } + + internal static ushort[] BE_To_UInt16(byte[] bs, int off, int len) + { + if ((len & 1) != 0) + throw new ArgumentException("must be a multiple of 2", "len"); + + ushort[] ns = new ushort[len / 2]; + for (int i = 0; i < len; i += 2) + { + BE_To_UInt16(bs, off + i, ns, i >> 1); + } + return ns; } internal static void UInt32_To_BE(uint n, byte[] bs) @@ -57,13 +103,6 @@ namespace Org.BouncyCastle.Crypto.Utilities bs[off + 3] = (byte)(n); } - internal static byte[] UInt32_To_BE(uint[] ns) - { - byte[] bs = new byte[4 * ns.Length]; - UInt32_To_BE(ns, bs, 0); - return bs; - } - internal static void UInt32_To_BE(uint[] ns, byte[] bs, int off) { for (int i = 0; i < ns.Length; ++i) @@ -73,7 +112,7 @@ namespace Org.BouncyCastle.Crypto.Utilities } } - public static void UInt32_To_BE(uint[] ns, int nsOff, int nsLen, byte[] bs, int bsOff) + internal static void UInt32_To_BE(uint[] ns, int nsOff, int nsLen, byte[] bs, int bsOff) { for (int i = 0; i < nsLen; ++i) { @@ -82,6 +121,20 @@ namespace Org.BouncyCastle.Crypto.Utilities } } + internal static byte[] UInt32_To_BE(uint n) + { + byte[] bs = new byte[4]; + UInt32_To_BE(n, bs, 0); + return bs; + } + + internal static byte[] UInt32_To_BE(uint[] ns) + { + byte[] bs = new byte[4 * ns.Length]; + UInt32_To_BE(ns, bs, 0); + return bs; + } + internal static uint BE_To_UInt32(byte[] bs) { return (uint)bs[0] << 24 @@ -107,7 +160,7 @@ namespace Org.BouncyCastle.Crypto.Utilities } } - public static void BE_To_UInt32(byte[] bs, int bsOff, uint[] ns, int nsOff, int nsLen) + internal static void BE_To_UInt32(byte[] bs, int bsOff, uint[] ns, int nsOff, int nsLen) { for (int i = 0; i < nsLen; ++i) { @@ -151,7 +204,7 @@ namespace Org.BouncyCastle.Crypto.Utilities } } - public static void UInt64_To_BE(ulong[] ns, int nsOff, int nsLen, byte[] bs, int bsOff) + internal static void UInt64_To_BE(ulong[] ns, int nsOff, int nsLen, byte[] bs, int bsOff) { for (int i = 0; i < nsLen; ++i) { @@ -160,13 +213,6 @@ namespace Org.BouncyCastle.Crypto.Utilities } } - internal static ulong BE_To_UInt64(byte[] bs) - { - uint hi = BE_To_UInt32(bs); - uint lo = BE_To_UInt32(bs, 4); - return ((ulong)hi << 32) | (ulong)lo; - } - internal static ulong BE_To_UInt64(byte[] bs, int off) { uint hi = BE_To_UInt32(bs, off); @@ -183,7 +229,7 @@ namespace Org.BouncyCastle.Crypto.Utilities } } - public static void BE_To_UInt64(byte[] bs, int bsOff, ulong[] ns, int nsOff, int nsLen) + internal static void BE_To_UInt64(byte[] bs, int bsOff, ulong[] ns, int nsOff, int nsLen) { for (int i = 0; i < nsLen; ++i) { |