Home | History | Annotate | Download | only in crypto 
      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_private_key * crypto_private_key_import(const u8 *key,
     30 						      size_t len,
     31 						      const char *passwd)
     32 {
     33 	struct crypto_private_key *res;
     34 
     35 	/* First, check for possible PKCS #8 encoding */
     36 	res = pkcs8_key_import(key, len);
     37 	if (res)
     38 		return res;
     39 
     40 	if (passwd) {
     41 		/* Try to parse as encrypted PKCS #8 */
     42 		res = pkcs8_enc_key_import(key, len, passwd);
     43 		if (res)
     44 			return res;
     45 	}
     46 
     47 	/* Not PKCS#8, so try to import PKCS #1 encoded RSA private key */
     48 	wpa_printf(MSG_DEBUG, "Trying to parse PKCS #1 encoded RSA private "
     49 		   "key");
     50 	return (struct crypto_private_key *)
     51 		crypto_rsa_import_private_key(key, len);
     52 }
     53 
     54 
     55 struct crypto_public_key * crypto_public_key_from_cert(const u8 *buf,
     56 						       size_t len)
     57 {
     58 	/* No X.509 support in crypto_internal.c */
     59 	return NULL;
     60 }
     61 
     62 
     63 int crypto_public_key_encrypt_pkcs1_v15(struct crypto_public_key *key,
     64 					const u8 *in, size_t inlen,
     65 					u8 *out, size_t *outlen)
     66 {
     67 	return pkcs1_encrypt(2, (struct crypto_rsa_key *) key,
     68 			     0, in, inlen, out, outlen);
     69 }
     70 
     71 
     72 int crypto_private_key_decrypt_pkcs1_v15(struct crypto_private_key *key,
     73 					 const u8 *in, size_t inlen,
     74 					 u8 *out, size_t *outlen)
     75 {
     76 	return pkcs1_v15_private_key_decrypt((struct crypto_rsa_key *) key,
     77 					     in, inlen, out, outlen);
     78 }
     79 
     80 
     81 int crypto_private_key_sign_pkcs1(struct crypto_private_key *key,
     82 				  const u8 *in, size_t inlen,
     83 				  u8 *out, size_t *outlen)
     84 {
     85 	return pkcs1_encrypt(1, (struct crypto_rsa_key *) key,
     86 			     1, in, inlen, out, outlen);
     87 }
     88 
     89 
     90 void crypto_public_key_free(struct crypto_public_key *key)
     91 {
     92 	crypto_rsa_free((struct crypto_rsa_key *) key);
     93 }
     94 
     95 
     96 void crypto_private_key_free(struct crypto_private_key *key)
     97 {
     98 	crypto_rsa_free((struct crypto_rsa_key *) key);
     99 }
    100 
    101 
    102 int crypto_public_key_decrypt_pkcs1(struct crypto_public_key *key,
    103 				    const u8 *crypt, size_t crypt_len,
    104 				    u8 *plain, size_t *plain_len)
    105 {
    106 	return pkcs1_decrypt_public_key((struct crypto_rsa_key *) key,
    107 					crypt, crypt_len, plain, plain_len);
    108 }
    109