diff options
Diffstat (limited to 'crypto/pkcs12/p12_key.c')
-rw-r--r-- | crypto/pkcs12/p12_key.c | 124 |
1 files changed, 41 insertions, 83 deletions
diff --git a/crypto/pkcs12/p12_key.c b/crypto/pkcs12/p12_key.c index 4849cbd5bc..a40ae4cbe8 100644 --- a/crypto/pkcs12/p12_key.c +++ b/crypto/pkcs12/p12_key.c @@ -12,11 +12,9 @@ #include <openssl/pkcs12.h> #include <openssl/bn.h> #include <openssl/trace.h> - -/* PKCS12 compatible key/IV generation */ -#ifndef min -# define min(a,b) ((a) < (b) ? (a) : (b)) -#endif +#include <openssl/kdf.h> +#include <openssl/core_names.h> +#include "internal/provider.h" int PKCS12_key_gen_asc(const char *pass, int passlen, unsigned char *salt, int saltlen, int id, int iter, int n, @@ -68,16 +66,37 @@ int PKCS12_key_gen_uni(unsigned char *pass, int passlen, unsigned char *salt, int saltlen, int id, int iter, int n, unsigned char *out, const EVP_MD *md_type) { - unsigned char *B = NULL, *D = NULL, *I = NULL, *p = NULL, *Ai = NULL; - int Slen, Plen, Ilen; - int i, j, u, v; - int ret = 0; - EVP_MD_CTX *ctx = NULL; - unsigned char *tmpout = out; - int tmpn = n; + int res = 0; + EVP_KDF *kdf; + EVP_KDF_CTX *ctx; + OSSL_PARAM params[6], *p = params; + + if (n <= 0) + return 0; - ctx = EVP_MD_CTX_new(); + /* + * The parameter query isn't available but the library context can be + * extracted from the passed digest. + */ + kdf = EVP_KDF_fetch(ossl_provider_library_context(EVP_MD_provider(md_type)), + "PKCS12KDF", NULL); + if (kdf == NULL) + return 0; + ctx = EVP_KDF_CTX_new(kdf); + EVP_KDF_free(kdf); if (ctx == NULL) + return 0; + + *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST, + (char *)EVP_MD_name(md_type), 0); + *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_PASSWORD, + pass, passlen); + *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SALT, + salt, saltlen); + *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_PKCS12_ID, &id); + *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_ITER, &iter); + *p = OSSL_PARAM_construct_end(); + if (!EVP_KDF_CTX_set_params(ctx, params)) goto err; OSSL_TRACE_BEGIN(PKCS12_KEYGEN) { @@ -89,77 +108,16 @@ int PKCS12_key_gen_uni(unsigned char *pass, int passlen, unsigned char *salt, BIO_hex_string(trc_out, 0, saltlen, salt, saltlen); BIO_printf(trc_out, "\n"); } OSSL_TRACE_END(PKCS12_KEYGEN); - v = EVP_MD_block_size(md_type); - u = EVP_MD_size(md_type); - if (u < 0 || v <= 0) - goto err; - D = OPENSSL_malloc(v); - Ai = OPENSSL_malloc(u); - B = OPENSSL_malloc(v + 1); - Slen = v * ((saltlen + v - 1) / v); - if (passlen) - Plen = v * ((passlen + v - 1) / v); - else - Plen = 0; - Ilen = Slen + Plen; - I = OPENSSL_malloc(Ilen); - if (D == NULL || Ai == NULL || B == NULL || I == NULL) - goto err; - for (i = 0; i < v; i++) - D[i] = id; - p = I; - for (i = 0; i < Slen; i++) - *p++ = salt[i % saltlen]; - for (i = 0; i < Plen; i++) - *p++ = pass[i % passlen]; - for (;;) { - if (!EVP_DigestInit_ex(ctx, md_type, NULL) - || !EVP_DigestUpdate(ctx, D, v) - || !EVP_DigestUpdate(ctx, I, Ilen) - || !EVP_DigestFinal_ex(ctx, Ai, NULL)) - goto err; - for (j = 1; j < iter; j++) { - if (!EVP_DigestInit_ex(ctx, md_type, NULL) - || !EVP_DigestUpdate(ctx, Ai, u) - || !EVP_DigestFinal_ex(ctx, Ai, NULL)) - goto err; - } - memcpy(out, Ai, min(n, u)); - if (u >= n) { - OSSL_TRACE_BEGIN(PKCS12_KEYGEN) { - BIO_printf(trc_out, "Output KEY (length %d)\n", tmpn); - BIO_hex_string(trc_out, 0, tmpn, tmpout, tmpn); - BIO_printf(trc_out, "\n"); - } OSSL_TRACE_END(PKCS12_KEYGEN); - ret = 1; - goto end; - } - n -= u; - out += u; - for (j = 0; j < v; j++) - B[j] = Ai[j % u]; - for (j = 0; j < Ilen; j += v) { - int k; - unsigned char *Ij = I + j; - uint16_t c = 1; - /* Work out Ij = Ij + B + 1 */ - for (k = v - 1; k >= 0; k--) { - c += Ij[k] + B[k]; - Ij[k] = (unsigned char)c; - c >>= 8; - } - } + if (EVP_KDF_derive(ctx, out, (size_t)n)) { + res = 1; + OSSL_TRACE_BEGIN(PKCS12_KEYGEN) { + BIO_printf(trc_out, "Output KEY (length %d)\n", n); + BIO_hex_string(trc_out, 0, n, out, n); + BIO_printf(trc_out, "\n"); + } OSSL_TRACE_END(PKCS12_KEYGEN); } - err: - PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI, ERR_R_MALLOC_FAILURE); - - end: - OPENSSL_free(Ai); - OPENSSL_free(B); - OPENSSL_free(D); - OPENSSL_free(I); - EVP_MD_CTX_free(ctx); - return ret; + EVP_KDF_CTX_free(ctx); + return res; } |