1 /* 2 * Crypto wrapper for internal crypto implementation - RSA parts 3 * Copyright (c) 2006-2009, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "crypto.h" 13 #include "tls/rsa.h" 14 #include "tls/pkcs1.h" 15 #include "tls/pkcs8.h" 16 17 /* Dummy structures; these are just typecast to struct crypto_rsa_key */ 18 struct crypto_public_key; 19 struct crypto_private_key; 20 21 22 struct crypto_public_key * crypto_public_key_import(const u8 *key, size_t len) 23 { 24 return (struct crypto_public_key *) 25 crypto_rsa_import_public_key(key, len); 26 } 27 28 29 struct crypto_public_key * 30 crypto_public_key_import_parts(const u8 *n, size_t n_len, 31 const u8 *e, size_t e_len) 32 { 33 return (struct crypto_public_key *) 34 crypto_rsa_import_public_key_parts(n, n_len, e, e_len); 35 } 36 37 38 struct crypto_private_key * crypto_private_key_import(const u8 *key, 39 size_t len, 40 const char *passwd) 41 { 42 struct crypto_private_key *res; 43 44 /* First, check for possible PKCS #8 encoding */ 45 res = pkcs8_key_import(key, len); 46 if (res) 47 return res; 48 49 if (passwd) { 50 /* Try to parse as encrypted PKCS #8 */ 51 res = pkcs8_enc_key_import(key, len, passwd); 52 if (res) 53 return res; 54 } 55 56 /* Not PKCS#8, so try to import PKCS #1 encoded RSA private key */ 57 wpa_printf(MSG_DEBUG, "Trying to parse PKCS #1 encoded RSA private " 58 "key"); 59 return (struct crypto_private_key *) 60 crypto_rsa_import_private_key(key, len); 61 } 62 63 64 struct crypto_public_key * crypto_public_key_from_cert(const u8 *buf, 65 size_t len) 66 { 67 /* No X.509 support in crypto_internal.c */ 68 return NULL; 69 } 70 71 72 int crypto_public_key_encrypt_pkcs1_v15(struct crypto_public_key *key, 73 const u8 *in, size_t inlen, 74 u8 *out, size_t *outlen) 75 { 76 return pkcs1_encrypt(2, (struct crypto_rsa_key *) key, 77 0, in, inlen, out, outlen); 78 } 79 80 81 int crypto_private_key_decrypt_pkcs1_v15(struct crypto_private_key *key, 82 const u8 *in, size_t inlen, 83 u8 *out, size_t *outlen) 84 { 85 return pkcs1_v15_private_key_decrypt((struct crypto_rsa_key *) key, 86 in, inlen, out, outlen); 87 } 88 89 90 int crypto_private_key_sign_pkcs1(struct crypto_private_key *key, 91 const u8 *in, size_t inlen, 92 u8 *out, size_t *outlen) 93 { 94 return pkcs1_encrypt(1, (struct crypto_rsa_key *) key, 95 1, in, inlen, out, outlen); 96 } 97 98 99 void crypto_public_key_free(struct crypto_public_key *key) 100 { 101 crypto_rsa_free((struct crypto_rsa_key *) key); 102 } 103 104 105 void crypto_private_key_free(struct crypto_private_key *key) 106 { 107 crypto_rsa_free((struct crypto_rsa_key *) key); 108 } 109 110 111 int crypto_public_key_decrypt_pkcs1(struct crypto_public_key *key, 112 const u8 *crypt, size_t crypt_len, 113 u8 *plain, size_t *plain_len) 114 { 115 return pkcs1_decrypt_public_key((struct crypto_rsa_key *) key, 116 crypt, crypt_len, plain, plain_len); 117 } 118