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      1 /* Copyright (c) 2016, Google Inc.
      2  *
      3  * Permission to use, copy, modify, and/or distribute this software for any
      4  * purpose with or without fee is hereby granted, provided that the above
      5  * copyright notice and this permission notice appear in all copies.
      6  *
      7  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
      8  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
      9  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
     10  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     11  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
     12  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
     13  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
     14 
     15 #ifndef OPENSSL_HEADER_X509_INTERNAL_H
     16 #define OPENSSL_HEADER_X509_INTERNAL_H
     17 
     18 #include <openssl/base.h>
     19 #include <openssl/evp.h>
     20 #include <openssl/x509.h>
     21 
     22 #if defined(__cplusplus)
     23 extern "C" {
     24 #endif
     25 
     26 
     27 /* RSA-PSS functions. */
     28 
     29 /* x509_rsa_pss_to_ctx configures |ctx| for an RSA-PSS operation based on
     30  * signature algorithm parameters in |sigalg| (which must have type
     31  * |NID_rsassaPss|) and key |pkey|. It returns one on success and zero on
     32  * error. */
     33 int x509_rsa_pss_to_ctx(EVP_MD_CTX *ctx, X509_ALGOR *sigalg, EVP_PKEY *pkey);
     34 
     35 /* x509_rsa_pss_to_ctx sets |algor| to the signature algorithm parameters for
     36  * |ctx|, which must have been configured for an RSA-PSS signing operation. It
     37  * returns one on success and zero on error. */
     38 int x509_rsa_ctx_to_pss(EVP_MD_CTX *ctx, X509_ALGOR *algor);
     39 
     40 /* x509_print_rsa_pss_params prints a human-readable representation of RSA-PSS
     41  * parameters in |sigalg| to |bp|. It returns one on success and zero on
     42  * error. */
     43 int x509_print_rsa_pss_params(BIO *bp, const X509_ALGOR *sigalg, int indent,
     44                               ASN1_PCTX *pctx);
     45 
     46 
     47 /* Signature algorithm functions. */
     48 
     49 /* x509_digest_sign_algorithm encodes the signing parameters of |ctx| as an
     50  * AlgorithmIdentifer and saves the result in |algor|. It returns one on
     51  * success, or zero on error. */
     52 int x509_digest_sign_algorithm(EVP_MD_CTX *ctx, X509_ALGOR *algor);
     53 
     54 /* x509_digest_verify_init sets up |ctx| for a signature verification operation
     55  * with public key |pkey| and parameters from |algor|. The |ctx| argument must
     56  * have been initialised with |EVP_MD_CTX_init|. It returns one on success, or
     57  * zero on error. */
     58 int x509_digest_verify_init(EVP_MD_CTX *ctx, X509_ALGOR *sigalg,
     59                             EVP_PKEY *pkey);
     60 
     61 
     62 #if defined(__cplusplus)
     63 }  /* extern C */
     64 #endif
     65 
     66 #endif  /* OPENSSL_HEADER_X509_INTERNAL_H */
     67