diff options
Diffstat (limited to 'src/crypto/evp/asn1.c')
| -rw-r--r-- | src/crypto/evp/asn1.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/src/crypto/evp/asn1.c b/src/crypto/evp/asn1.c new file mode 100644 index 0000000..3df9f52 --- /dev/null +++ b/src/crypto/evp/asn1.c @@ -0,0 +1,167 @@ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] */ + +#include <openssl/evp.h> + +#include <openssl/asn1.h> +#include <openssl/err.h> +#include <openssl/obj.h> +#include <openssl/x509.h> + +#include "internal.h" + + +EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **out, const uint8_t **inp, + long len) { + EVP_PKEY *ret; + + if (out == NULL || *out == NULL) { + ret = EVP_PKEY_new(); + if (ret == NULL) { + OPENSSL_PUT_ERROR(EVP, d2i_PrivateKey, ERR_R_EVP_LIB); + return NULL; + } + } else { + ret = *out; + } + + if (!EVP_PKEY_set_type(ret, type)) { + OPENSSL_PUT_ERROR(EVP, d2i_PrivateKey, EVP_R_UNKNOWN_PUBLIC_KEY_TYPE); + goto err; + } + + if (!ret->ameth->old_priv_decode || + !ret->ameth->old_priv_decode(ret, inp, len)) { + if (ret->ameth->priv_decode) { + PKCS8_PRIV_KEY_INFO *p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL, inp, len); + if (!p8) { + goto err; + } + EVP_PKEY_free(ret); + ret = EVP_PKCS82PKEY(p8); + PKCS8_PRIV_KEY_INFO_free(p8); + } else { + OPENSSL_PUT_ERROR(EVP, d2i_PrivateKey, ERR_R_ASN1_LIB); + goto err; + } + } + + if (out != NULL) { + *out = ret; + } + return ret; + +err: + if (out == NULL || *out != ret) { + EVP_PKEY_free(ret); + } + return NULL; +} + +EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **out, const uint8_t **inp, long len) { + STACK_OF(ASN1_TYPE) *inkey; + const uint8_t *p; + int keytype; + p = *inp; + + /* Dirty trick: read in the ASN1 data into out STACK_OF(ASN1_TYPE): + * by analyzing it we can determine the passed structure: this + * assumes the input is surrounded by an ASN1 SEQUENCE. */ + inkey = d2i_ASN1_SEQUENCE_ANY(NULL, &p, len); + /* Since we only need to discern "traditional format" RSA and DSA + * keys we can just count the elements. */ + if (sk_ASN1_TYPE_num(inkey) == 6) { + keytype = EVP_PKEY_DSA; + } else if (sk_ASN1_TYPE_num(inkey) == 4) { + keytype = EVP_PKEY_EC; + } else if (sk_ASN1_TYPE_num(inkey) == 3) { + /* This seems to be PKCS8, not traditional format */ + PKCS8_PRIV_KEY_INFO *p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL, inp, len); + EVP_PKEY *ret; + + sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free); + if (!p8) { + OPENSSL_PUT_ERROR(EVP, d2i_AutoPrivateKey, + EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE); + return NULL; + } + ret = EVP_PKCS82PKEY(p8); + PKCS8_PRIV_KEY_INFO_free(p8); + if (out) { + *out = ret; + } + return ret; + } else { + keytype = EVP_PKEY_RSA; + } + + sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free); + return d2i_PrivateKey(keytype, out, inp, len); +} + +int i2d_PublicKey(EVP_PKEY *key, uint8_t **outp) { + switch (key->type) { + case EVP_PKEY_RSA: + return i2d_RSAPublicKey(key->pkey.rsa, outp); + case EVP_PKEY_DSA: + return i2d_DSAPublicKey(key->pkey.dsa, outp); + case EVP_PKEY_EC: + return i2o_ECPublicKey(key->pkey.ec, outp); + default: + OPENSSL_PUT_ERROR(EVP, i2d_PublicKey, EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE); + return -1; + } +} |