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fix build error

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orignal 2015-11-11 13:32:58 -05:00
parent 5c58bf44c0
commit 593b25a5cd
1 changed files with 6 additions and 5 deletions
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11
Signature.cpp
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@ -99,7 +99,7 @@ namespace crypto
bool Verify (const EDDSAPoint& publicKey, const uint8_t * digest, const uint8_t * signature, BN_CTX * ctx) const bool Verify (const EDDSAPoint& publicKey, const uint8_t * digest, const uint8_t * signature, BN_CTX * ctx) const
{ {
BIGNUM * h = DecodeBN (digest, 64); BIGNUM * h = DecodeBN<64> (digest);
// signature 0..31 - R, 32..63 - S // signature 0..31 - R, 32..63 - S
// B*S = R + PK*h => R = B*S - PK*h // B*S = R + PK*h => R = B*S - PK*h
// we don't decode R, but encode (B*S - PK*h) // we don't decode R, but encode (B*S - PK*h)
@ -125,7 +125,7 @@ namespace crypto
SHA512_Update (&ctx, buf, len); // data SHA512_Update (&ctx, buf, len); // data
uint8_t digest[64]; uint8_t digest[64];
SHA512_Final (digest, &ctx); SHA512_Final (digest, &ctx);
BIGNUM * r = DecodeBN (digest, 32); // DecodeBN (digest, 64); // for test vectors BIGNUM * r = DecodeBN<32> (digest); // DecodeBN<64> (digest); // for test vectors
// calculate R // calculate R
uint8_t R[EDDSA25519_SIGNATURE_LENGTH/2]; // we must use separate buffer because signature might be inside buf uint8_t R[EDDSA25519_SIGNATURE_LENGTH/2]; // we must use separate buffer because signature might be inside buf
EncodePoint (Normalize (MulB (digest, bnCtx), bnCtx), R); // EncodePoint (Mul (B, r, bnCtx), R); // for test vectors EncodePoint (Normalize (MulB (digest, bnCtx), bnCtx), R); // EncodePoint (Mul (B, r, bnCtx), R); // for test vectors
@ -135,9 +135,9 @@ namespace crypto
SHA512_Update (&ctx, publicKeyEncoded, EDDSA25519_PUBLIC_KEY_LENGTH); // public key SHA512_Update (&ctx, publicKeyEncoded, EDDSA25519_PUBLIC_KEY_LENGTH); // public key
SHA512_Update (&ctx, buf, len); // data SHA512_Update (&ctx, buf, len); // data
SHA512_Final (digest, &ctx); SHA512_Final (digest, &ctx);
BIGNUM * h = DecodeBN (digest, 64); BIGNUM * h = DecodeBN<64> (digest);
// S = (r + h*a) % l // S = (r + h*a) % l
BIGNUM * a = DecodeBN (expandedPrivateKey, EDDSA25519_PRIVATE_KEY_LENGTH); // left half of expanded key BIGNUM * a = DecodeBN<EDDSA25519_PRIVATE_KEY_LENGTH> (expandedPrivateKey); // left half of expanded key
BN_mod_mul (h, h, a, l, bnCtx); // %l BN_mod_mul (h, h, a, l, bnCtx); // %l
BN_mod_add (h, h, r, l, bnCtx); // %l BN_mod_add (h, h, r, l, bnCtx); // %l
memcpy (signature, R, EDDSA25519_SIGNATURE_LENGTH/2); memcpy (signature, R, EDDSA25519_SIGNATURE_LENGTH/2);
@ -356,7 +356,8 @@ namespace crypto
buf[EDDSA25519_PUBLIC_KEY_LENGTH - 1] |= 0x80; // set highest bit buf[EDDSA25519_PUBLIC_KEY_LENGTH - 1] |= 0x80; // set highest bit
} }
BIGNUM * DecodeBN (const uint8_t * buf, size_t len) const template<int len>
BIGNUM * DecodeBN (const uint8_t * buf) const
{ {
// buf is Little Endian convert it to Big Endian // buf is Little Endian convert it to Big Endian
uint8_t buf1[len]; uint8_t buf1[len];