From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001 From: Wojtek Kosior Date: Fri, 30 Apr 2021 00:33:56 +0200 Subject: initial/final commit --- openssl-1.1.0h/crypto/evp/scrypt.c | 248 +++++++++++++++++++++++++++++++++++++ 1 file changed, 248 insertions(+) create mode 100644 openssl-1.1.0h/crypto/evp/scrypt.c (limited to 'openssl-1.1.0h/crypto/evp/scrypt.c') diff --git a/openssl-1.1.0h/crypto/evp/scrypt.c b/openssl-1.1.0h/crypto/evp/scrypt.c new file mode 100644 index 0000000..101bb1e --- /dev/null +++ b/openssl-1.1.0h/crypto/evp/scrypt.c @@ -0,0 +1,248 @@ +/* + * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#include +#include +#include +#include +#include +#include + +#ifndef OPENSSL_NO_SCRYPT + +#define R(a,b) (((a) << (b)) | ((a) >> (32 - (b)))) +static void salsa208_word_specification(uint32_t inout[16]) +{ + int i; + uint32_t x[16]; + memcpy(x, inout, sizeof(x)); + for (i = 8; i > 0; i -= 2) { + x[4] ^= R(x[0] + x[12], 7); + x[8] ^= R(x[4] + x[0], 9); + x[12] ^= R(x[8] + x[4], 13); + x[0] ^= R(x[12] + x[8], 18); + x[9] ^= R(x[5] + x[1], 7); + x[13] ^= R(x[9] + x[5], 9); + x[1] ^= R(x[13] + x[9], 13); + x[5] ^= R(x[1] + x[13], 18); + x[14] ^= R(x[10] + x[6], 7); + x[2] ^= R(x[14] + x[10], 9); + x[6] ^= R(x[2] + x[14], 13); + x[10] ^= R(x[6] + x[2], 18); + x[3] ^= R(x[15] + x[11], 7); + x[7] ^= R(x[3] + x[15], 9); + x[11] ^= R(x[7] + x[3], 13); + x[15] ^= R(x[11] + x[7], 18); + x[1] ^= R(x[0] + x[3], 7); + x[2] ^= R(x[1] + x[0], 9); + x[3] ^= R(x[2] + x[1], 13); + x[0] ^= R(x[3] + x[2], 18); + x[6] ^= R(x[5] + x[4], 7); + x[7] ^= R(x[6] + x[5], 9); + x[4] ^= R(x[7] + x[6], 13); + x[5] ^= R(x[4] + x[7], 18); + x[11] ^= R(x[10] + x[9], 7); + x[8] ^= R(x[11] + x[10], 9); + x[9] ^= R(x[8] + x[11], 13); + x[10] ^= R(x[9] + x[8], 18); + x[12] ^= R(x[15] + x[14], 7); + x[13] ^= R(x[12] + x[15], 9); + x[14] ^= R(x[13] + x[12], 13); + x[15] ^= R(x[14] + x[13], 18); + } + for (i = 0; i < 16; ++i) + inout[i] += x[i]; + OPENSSL_cleanse(x, sizeof(x)); +} + +static void scryptBlockMix(uint32_t *B_, uint32_t *B, uint64_t r) +{ + uint64_t i, j; + uint32_t X[16], *pB; + + memcpy(X, B + (r * 2 - 1) * 16, sizeof(X)); + pB = B; + for (i = 0; i < r * 2; i++) { + for (j = 0; j < 16; j++) + X[j] ^= *pB++; + salsa208_word_specification(X); + memcpy(B_ + (i / 2 + (i & 1) * r) * 16, X, sizeof(X)); + } + OPENSSL_cleanse(X, sizeof(X)); +} + +static void scryptROMix(unsigned char *B, uint64_t r, uint64_t N, + uint32_t *X, uint32_t *T, uint32_t *V) +{ + unsigned char *pB; + uint32_t *pV; + uint64_t i, k; + + /* Convert from little endian input */ + for (pV = V, i = 0, pB = B; i < 32 * r; i++, pV++) { + *pV = *pB++; + *pV |= *pB++ << 8; + *pV |= *pB++ << 16; + *pV |= (uint32_t)*pB++ << 24; + } + + for (i = 1; i < N; i++, pV += 32 * r) + scryptBlockMix(pV, pV - 32 * r, r); + + scryptBlockMix(X, V + (N - 1) * 32 * r, r); + + for (i = 0; i < N; i++) { + uint32_t j; + j = X[16 * (2 * r - 1)] % N; + pV = V + 32 * r * j; + for (k = 0; k < 32 * r; k++) + T[k] = X[k] ^ *pV++; + scryptBlockMix(X, T, r); + } + /* Convert output to little endian */ + for (i = 0, pB = B; i < 32 * r; i++) { + uint32_t xtmp = X[i]; + *pB++ = xtmp & 0xff; + *pB++ = (xtmp >> 8) & 0xff; + *pB++ = (xtmp >> 16) & 0xff; + *pB++ = (xtmp >> 24) & 0xff; + } +} + +#ifndef SIZE_MAX +# define SIZE_MAX ((size_t)-1) +#endif + +/* + * Maximum power of two that will fit in uint64_t: this should work on + * most (all?) platforms. + */ + +#define LOG2_UINT64_MAX (sizeof(uint64_t) * 8 - 1) + +/* + * Maximum value of p * r: + * p <= ((2^32-1) * hLen) / MFLen => + * p <= ((2^32-1) * 32) / (128 * r) => + * p * r <= (2^30-1) + * + */ + +#define SCRYPT_PR_MAX ((1 << 30) - 1) + +/* + * Maximum permitted memory allow this to be overridden with Configuration + * option: e.g. -DSCRYPT_MAX_MEM=0 for maximum possible. + */ + +#ifdef SCRYPT_MAX_MEM +# if SCRYPT_MAX_MEM == 0 +# undef SCRYPT_MAX_MEM +/* + * Although we could theoretically allocate SIZE_MAX memory that would leave + * no memory available for anything else so set limit as half that. + */ +# define SCRYPT_MAX_MEM (SIZE_MAX/2) +# endif +#else +/* Default memory limit: 32 MB */ +# define SCRYPT_MAX_MEM (1024 * 1024 * 32) +#endif + +int EVP_PBE_scrypt(const char *pass, size_t passlen, + const unsigned char *salt, size_t saltlen, + uint64_t N, uint64_t r, uint64_t p, uint64_t maxmem, + unsigned char *key, size_t keylen) +{ + int rv = 0; + unsigned char *B; + uint32_t *X, *V, *T; + uint64_t i, Blen, Vlen; + size_t allocsize; + + /* Sanity check parameters */ + /* initial check, r,p must be non zero, N >= 2 and a power of 2 */ + if (r == 0 || p == 0 || N < 2 || (N & (N - 1))) + return 0; + /* Check p * r < SCRYPT_PR_MAX avoiding overflow */ + if (p > SCRYPT_PR_MAX / r) + return 0; + + /* + * Need to check N: if 2^(128 * r / 8) overflows limit this is + * automatically satisfied since N <= UINT64_MAX. + */ + + if (16 * r <= LOG2_UINT64_MAX) { + if (N >= (((uint64_t)1) << (16 * r))) + return 0; + } + + /* Memory checks: check total allocated buffer size fits in uint64_t */ + + /* + * B size in section 5 step 1.S + * Note: we know p * 128 * r < UINT64_MAX because we already checked + * p * r < SCRYPT_PR_MAX + */ + Blen = p * 128 * r; + + /* + * Check 32 * r * (N + 2) * sizeof(uint32_t) fits in + * uint64_t and also size_t (their sizes are unrelated). + * This is combined size V, X and T (section 4) + */ + i = UINT64_MAX / (32 * sizeof(uint32_t)); + if (N + 2 > i / r) + return 0; + Vlen = 32 * r * (N + 2) * sizeof(uint32_t); + + /* check total allocated size fits in uint64_t */ + if (Blen > UINT64_MAX - Vlen) + return 0; + /* check total allocated size fits in size_t */ + if (Blen > SIZE_MAX - Vlen) + return 0; + + allocsize = (size_t)(Blen + Vlen); + + if (maxmem == 0) + maxmem = SCRYPT_MAX_MEM; + + if (allocsize > maxmem) { + EVPerr(EVP_F_EVP_PBE_SCRYPT, EVP_R_MEMORY_LIMIT_EXCEEDED); + return 0; + } + + /* If no key return to indicate parameters are OK */ + if (key == NULL) + return 1; + + B = OPENSSL_malloc(allocsize); + if (B == NULL) + return 0; + X = (uint32_t *)(B + Blen); + T = X + 32 * r; + V = T + 32 * r; + if (PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, 1, EVP_sha256(), + Blen, B) == 0) + goto err; + + for (i = 0; i < p; i++) + scryptROMix(B + 128 * r * i, r, N, X, T, V); + + if (PKCS5_PBKDF2_HMAC(pass, passlen, B, Blen, 1, EVP_sha256(), + keylen, key) == 0) + goto err; + rv = 1; + err: + OPENSSL_clear_free(B, allocsize); + return rv; +} +#endif -- cgit v1.2.3