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Viewing changes to Development/languages/C/Samples/openssl/check_rsa.c

  • Committer: Suren A. Chilingaryan
  • Date: 2009-04-09 03:21:08 UTC
  • Revision ID: csa@dside.dyndns.org-20090409032108-w4edamdh4adrgdu3
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Development/languages/C/Samples/openssl/check_rsa.c
 
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#include <stdio.h>
 
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#include <stdlib.h>
 
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#include <openssl/pem.h>
 
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#include <openssl/x509.h>
 
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main() {
 
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        int res;
 
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        FILE *f1, *f2;
 
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        BIGNUM *a, *b;
 
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        RSA *key=NULL;
 
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        X509 *x509=NULL;
 
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        EVP_PKEY *pkey=NULL;
 
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        f1=fopen("csa.crt","r");
 
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        f2=fopen("csa.key","r");
 
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        PEM_read_X509(f1,&x509,NULL,NULL);
 
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        pkey=X509_get_pubkey(x509);
 
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        key=EVP_PKEY_get1_RSA(pkey);
 
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        EVP_PKEY_free(pkey);
 
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        X509_free(x509);
 
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        if (!key) puts("Ooops");
 
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        a=BN_dup(key->n);
 
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        b=BN_dup(key->e);
 
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        PEM_read_RSAPrivateKey(f2,&key,NULL,NULL);
 
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        if (RSA_check_key(key)) {
 
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            if ((!BN_cmp(a,key->n))&&(!BN_cmp(b,key->e))) res=1;
 
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            else res=0;
 
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        } else res=0;
 
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        BN_free(a);
 
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        BN_free(b);
 
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        RSA_free(key);
 
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        fclose(f1);
 
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        fclose(f2);
 
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        printf("Result: %i\n",res);
 
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}