diff options
Diffstat (limited to 'rw.cpp')
| -rw-r--r-- | rw.cpp | 29 |
1 files changed, 4 insertions, 25 deletions
@@ -5,32 +5,9 @@ #include "nbtheory.h" #include "asn.h" -NAMESPACE_BEGIN(CryptoPP) - -void EMSA2Pad::ComputeMessageRepresentative(RandomNumberGenerator &rng, - const byte *recoverableMessage, unsigned int recoverableMessageLength, - HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty, - byte *representative, unsigned int representativeBitLength) const -{ - if (representativeBitLength % 8 != 7) - throw PK_SignatureScheme::InvalidKeyLength("EMSA2: EMSA2 requires a key length that is a multiple of 8"); - - unsigned int digestSize = hash.DigestSize(); - if (representativeBitLength < 8*digestSize + 31) - throw PK_SignatureScheme::KeyTooShort(); - - unsigned int representativeByteLength = BitsToBytes(representativeBitLength); - - representative[0] = messageEmpty ? 0x4b : 0x6b; - memset(representative+1, 0xbb, representativeByteLength-digestSize-4); // pad with 0xbb - byte *afterP2 = representative+representativeByteLength-digestSize-3; - afterP2[0] = 0xba; - hash.Final(afterP2+1); - representative[representativeByteLength-2] = *hashIdentifier.first; - representative[representativeByteLength-1] = 0xcc; -} +#ifndef CRYPTOPP_IMPORTS -// ***************************************************************************** +NAMESPACE_BEGIN(CryptoPP) void RWFunction::BERDecode(BufferedTransformation &bt) { @@ -201,3 +178,5 @@ void InvertibleRWFunction::AssignFrom(const NameValuePairs &source) } NAMESPACE_END + +#endif |