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add support for curve 25519 and Ed25519 in OpenSSH

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refactor curve25519 and Ed25519 code
fix warning in PEM_xxx_mem_xxx functions
This commit is contained in:
Ludovic FLAMENT
2015-08-01 18:28:18 +02:00
committed by Jacob Barthelmeh
parent f30a11f5ce
commit d050c10581
15 changed files with 888 additions and 204 deletions
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21
wolfcrypt/src/fe_operations.c
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@@ -107,8 +107,9 @@ void fe_0(fe h)
int curve25519(byte* q, byte* n, byte* p)
{
#if 0
unsigned char e[32];
unsigned int i;
#endif
fe x1;
fe x2;
fe z2;
@@ -120,10 +121,16 @@ int curve25519(byte* q, byte* n, byte* p)
unsigned int swap;
unsigned int b;
for (i = 0;i < 32;++i) e[i] = n[i];
e[0] &= 248;
e[31] &= 127;
e[31] |= 64;
/* Clamp already done during key generation and import */
#if 0
{
unsigned int i;
for (i = 0;i < 32;++i) e[i] = n[i];
e[0] &= 248;
e[31] &= 127;
e[31] |= 64;
}
#endif
fe_frombytes(x1,p);
fe_1(x2);
@@ -133,7 +140,11 @@ int curve25519(byte* q, byte* n, byte* p)
swap = 0;
for (pos = 254;pos >= 0;--pos) {
#if 0
b = e[pos / 8] >> (pos & 7);
#else
b = n[pos / 8] >> (pos & 7);
#endif
b &= 1;
swap ^= b;
fe_cswap(x2,x3,swap);