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author | wolfbeast <mcwerewolf@gmail.com> | 2018-02-23 11:04:39 +0100 |
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committer | wolfbeast <mcwerewolf@gmail.com> | 2018-06-05 22:24:08 +0200 |
commit | e10349ab8dda8a3f11be6aa19f2b6e29fe814044 (patch) | |
tree | 1a9b078b06a76af06839d407b7267880890afccc /security/nss/lib/freebl/chacha20.c | |
parent | 75b3dd4cbffb6e4534128278300ed6c8a3ab7506 (diff) | |
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Update NSS to 3.35-RTM
Diffstat (limited to 'security/nss/lib/freebl/chacha20.c')
-rw-r--r-- | security/nss/lib/freebl/chacha20.c | 104 |
1 files changed, 2 insertions, 102 deletions
diff --git a/security/nss/lib/freebl/chacha20.c b/security/nss/lib/freebl/chacha20.c index f55d1e670..15ed67b5b 100644 --- a/security/nss/lib/freebl/chacha20.c +++ b/security/nss/lib/freebl/chacha20.c @@ -7,113 +7,13 @@ #include <string.h> #include <stdio.h> -#include "prtypes.h" -#include "secport.h" #include "chacha20.h" - -#if defined(_MSC_VER) -#pragma intrinsic(_lrotl) -#define ROTL32(x, n) _lrotl(x, n) -#else -#define ROTL32(x, n) ((x << n) | (x >> ((8 * sizeof x) - n))) -#endif - -#define ROTATE(v, c) ROTL32((v), (c)) - -#define U32TO8_LITTLE(p, v) \ - { \ - (p)[0] = ((v)) & 0xff; \ - (p)[1] = ((v) >> 8) & 0xff; \ - (p)[2] = ((v) >> 16) & 0xff; \ - (p)[3] = ((v) >> 24) & 0xff; \ - } -#define U8TO32_LITTLE(p) \ - (((PRUint32)((p)[0])) | ((PRUint32)((p)[1]) << 8) | \ - ((PRUint32)((p)[2]) << 16) | ((PRUint32)((p)[3]) << 24)) - -#define QUARTERROUND(x, a, b, c, d) \ - x[a] = x[a] + x[b]; \ - x[d] = ROTATE(x[d] ^ x[a], 16); \ - x[c] = x[c] + x[d]; \ - x[b] = ROTATE(x[b] ^ x[c], 12); \ - x[a] = x[a] + x[b]; \ - x[d] = ROTATE(x[d] ^ x[a], 8); \ - x[c] = x[c] + x[d]; \ - x[b] = ROTATE(x[b] ^ x[c], 7); - -static void -ChaChaCore(unsigned char output[64], const PRUint32 input[16], int num_rounds) -{ - PRUint32 x[16]; - int i; - - PORT_Memcpy(x, input, sizeof(PRUint32) * 16); - for (i = num_rounds; i > 0; i -= 2) { - QUARTERROUND(x, 0, 4, 8, 12) - QUARTERROUND(x, 1, 5, 9, 13) - QUARTERROUND(x, 2, 6, 10, 14) - QUARTERROUND(x, 3, 7, 11, 15) - QUARTERROUND(x, 0, 5, 10, 15) - QUARTERROUND(x, 1, 6, 11, 12) - QUARTERROUND(x, 2, 7, 8, 13) - QUARTERROUND(x, 3, 4, 9, 14) - } - - for (i = 0; i < 16; ++i) { - x[i] = x[i] + input[i]; - } - for (i = 0; i < 16; ++i) { - U32TO8_LITTLE(output + 4 * i, x[i]); - } -} - -static const unsigned char sigma[16] = "expand 32-byte k"; +#include "verified/Hacl_Chacha20.h" void ChaCha20XOR(unsigned char *out, const unsigned char *in, unsigned int inLen, const unsigned char key[32], const unsigned char nonce[12], uint32_t counter) { - unsigned char block[64]; - PRUint32 input[16]; - unsigned int i; - - input[4] = U8TO32_LITTLE(key + 0); - input[5] = U8TO32_LITTLE(key + 4); - input[6] = U8TO32_LITTLE(key + 8); - input[7] = U8TO32_LITTLE(key + 12); - - input[8] = U8TO32_LITTLE(key + 16); - input[9] = U8TO32_LITTLE(key + 20); - input[10] = U8TO32_LITTLE(key + 24); - input[11] = U8TO32_LITTLE(key + 28); - - input[0] = U8TO32_LITTLE(sigma + 0); - input[1] = U8TO32_LITTLE(sigma + 4); - input[2] = U8TO32_LITTLE(sigma + 8); - input[3] = U8TO32_LITTLE(sigma + 12); - - input[12] = counter; - input[13] = U8TO32_LITTLE(nonce + 0); - input[14] = U8TO32_LITTLE(nonce + 4); - input[15] = U8TO32_LITTLE(nonce + 8); - - while (inLen >= 64) { - ChaChaCore(block, input, 20); - for (i = 0; i < 64; i++) { - out[i] = in[i] ^ block[i]; - } - - input[12]++; - inLen -= 64; - in += 64; - out += 64; - } - - if (inLen > 0) { - ChaChaCore(block, input, 20); - for (i = 0; i < inLen; i++) { - out[i] = in[i] ^ block[i]; - } - } + Hacl_Chacha20_chacha20(out, (uint8_t *)in, inLen, (uint8_t *)key, (uint8_t *)nonce, counter); } |