From b2b2dafc287a948e1118de3aed49b4517b2b7fb2 Mon Sep 17 00:00:00 2001 From: "Dr. Stephen Henson" Date: Fri, 13 Apr 2007 20:40:47 +0000 Subject: [PATCH] Add a bunch of S/MIME sample programs and data. --- demos/smime/cacert.pem | 18 +++++++ demos/smime/cakey.pem | 15 ++++++ demos/smime/signer.pem | 32 ++++++++++++ demos/smime/signer2.pem | 32 ++++++++++++ demos/smime/smdec.c | 83 +++++++++++++++++++++++++++++++ demos/smime/smenc.c | 92 ++++++++++++++++++++++++++++++++++ demos/smime/smsign.c | 89 +++++++++++++++++++++++++++++++++ demos/smime/smsign2.c | 107 ++++++++++++++++++++++++++++++++++++++++ demos/smime/smver.c | 87 ++++++++++++++++++++++++++++++++ 9 files changed, 555 insertions(+) create mode 100644 demos/smime/cacert.pem create mode 100644 demos/smime/cakey.pem create mode 100644 demos/smime/signer.pem create mode 100644 demos/smime/signer2.pem create mode 100644 demos/smime/smdec.c create mode 100644 demos/smime/smenc.c create mode 100644 demos/smime/smsign.c create mode 100644 demos/smime/smsign2.c create mode 100644 demos/smime/smver.c diff --git a/demos/smime/cacert.pem b/demos/smime/cacert.pem new file mode 100644 index 0000000000..75cbb347aa --- /dev/null +++ b/demos/smime/cacert.pem @@ -0,0 +1,18 @@ +-----BEGIN CERTIFICATE----- +MIIC6DCCAlGgAwIBAgIJAMfGO3rdo2uUMA0GCSqGSIb3DQEBBAUAMFcxCzAJBgNV +BAYTAlVLMRIwEAYDVQQHEwlUZXN0IENpdHkxFjAUBgNVBAoTDU9wZW5TU0wgR3Jv +dXAxHDAaBgNVBAMTE1Rlc3QgUy9NSU1FIFJvb3QgQ0EwHhcNMDcwNDEzMTc0MzE3 +WhcNMTcwNDEwMTc0MzE3WjBXMQswCQYDVQQGEwJVSzESMBAGA1UEBxMJVGVzdCBD +aXR5MRYwFAYDVQQKEw1PcGVuU1NMIEdyb3VwMRwwGgYDVQQDExNUZXN0IFMvTUlN +RSBSb290IENBMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCqJMal1uC1/1wz +i5+dE4EZF2im3BgROm5PVMbwPY9V1t+KYvtdc3rMcRgJaMbP+qaEcDXoIsZfYXGR +ielgfDNZmZcj1y/FOum+Jc2OZMs3ggPmjIQ3dbBECq0hZKcbz7wfr+2OeNWm46iT +jcSIXpGIRhUYEzOgv7zb8oOU70IbbwIDAQABo4G7MIG4MB0GA1UdDgQWBBRHUypx +CXFQYqewhGo72lWPQUsjoDCBiAYDVR0jBIGAMH6AFEdTKnEJcVBip7CEajvaVY9B +SyOgoVukWTBXMQswCQYDVQQGEwJVSzESMBAGA1UEBxMJVGVzdCBDaXR5MRYwFAYD +VQQKEw1PcGVuU1NMIEdyb3VwMRwwGgYDVQQDExNUZXN0IFMvTUlNRSBSb290IENB +ggkAx8Y7et2ja5QwDAYDVR0TBAUwAwEB/zANBgkqhkiG9w0BAQQFAAOBgQANI+Yc +G/YDM1WMUGEzEkU9UhsIUqdyBebnK3+OyxZSouDcE/M10jFJzBf/F5b0uUGAKWwo +u0dzmILfKjdfWe8EyCRafZcm00rVcO09i/63FBYzlHbmfUATIqZdhKzxxQMPs5mF +1je+pHUpzIY8TSXyh/uD9IkAy04IHwGZQf9akw== +-----END CERTIFICATE----- diff --git a/demos/smime/cakey.pem b/demos/smime/cakey.pem new file mode 100644 index 0000000000..3b53c5e817 --- /dev/null +++ b/demos/smime/cakey.pem @@ -0,0 +1,15 @@ +-----BEGIN RSA PRIVATE KEY----- +MIICXgIBAAKBgQCqJMal1uC1/1wzi5+dE4EZF2im3BgROm5PVMbwPY9V1t+KYvtd +c3rMcRgJaMbP+qaEcDXoIsZfYXGRielgfDNZmZcj1y/FOum+Jc2OZMs3ggPmjIQ3 +dbBECq0hZKcbz7wfr+2OeNWm46iTjcSIXpGIRhUYEzOgv7zb8oOU70IbbwIDAQAB +AoGBAKWOZ2UTc1BkjDjz0XoscmAR8Rj77MdGzfOPkIxPultSW+3yZpkGNyUbnsH5 +HAtf4Avai/m3bMN+s91kDpx9/g/I9ZEHPQLcDICETvwt/EHT7+hwvaQgsM+TgpMs +tjlGZOWent6wVIuvwwzqOMXZLgK9FvY7upwgtrys4G3Kab5hAkEA2QzFflWyEvKS +rMSaVtn/IjFilwa7H0IdakkjM34z4peerFTPBr4J47YD4RCR/dAvxyNy3zUxtH18 +9R6dUixI6QJBAMitJD0xOkbGWBX8KVJvRiKOIdf/95ZUAgN/h3bWKy57EB9NYj3u +jbxXcvdjfSqiITykkjAg7SG7nrlzJsu6CpcCQG6gVsy0auXDY0TRlASuaZ6I40Is +uRUOgqWYj2uAaHuWYdZeB4LdO3cnX0TISFDAWom6JKNlnmbrCtR4fSDT13kCQQCU ++VQJyV3F5MDHsWbLt6eNR46AV5lpk/vatPXPlrZ/zwPs+PmRmGLICvNiDA2DdNDP +wCx2Zjsj67CtY3rNitMJAkEAm09BQnjnbBXUb1rd2SjNDWTsu80Z+zLu8pAwXNhW +8nsvMYqlYMIxuMPwu/QuTnMRhMZ08uhqoD3ukZnBeoMEVg== +-----END RSA PRIVATE KEY----- diff --git a/demos/smime/signer.pem b/demos/smime/signer.pem new file mode 100644 index 0000000000..bac16ba963 --- /dev/null +++ b/demos/smime/signer.pem @@ -0,0 +1,32 @@ +-----BEGIN CERTIFICATE----- +MIICpjCCAg+gAwIBAgIJAJ+rfmEoLQRhMA0GCSqGSIb3DQEBBAUAMFcxCzAJBgNV +BAYTAlVLMRIwEAYDVQQHEwlUZXN0IENpdHkxFjAUBgNVBAoTDU9wZW5TU0wgR3Jv +dXAxHDAaBgNVBAMTE1Rlc3QgUy9NSU1FIFJvb3QgQ0EwHhcNMDcwNDEzMTgyOTI3 +WhcNMTcwNDA5MTgyOTI3WjBWMQswCQYDVQQGEwJVSzElMCMGA1UEAxMcT3BlblNT +TCB0ZXN0IFMvTUlNRSBzaWduZXIgMTEgMB4GCSqGSIb3DQEJARYRdGVzdDFAb3Bl +bnNzbC5vcmcwgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBAL1ocAQ7ON2pIUXz +jwKPzpPB9ozB6PFG6F6kARO+i0DiT6Qn8abUjwpHPU+lGys83QlpbkQVUD6Fv/4L +ytihk6N9Pr/feECVcSZ20dI43WXjfYak14dSVrZkGNMMXqKmnnqtkAdD0oJN7A7y +gcf8RuViV0kvk9/36eCMwMHrImfhAgMBAAGjezB5MAkGA1UdEwQCMAAwLAYJYIZI +AYb4QgENBB8WHU9wZW5TU0wgR2VuZXJhdGVkIENlcnRpZmljYXRlMB0GA1UdDgQW +BBSyKqjvctIsFNBHULBTqr8SHtSxpDAfBgNVHSMEGDAWgBRHUypxCXFQYqewhGo7 +2lWPQUsjoDANBgkqhkiG9w0BAQQFAAOBgQBvdYVoBfd4RV/xWSMXIcgw/i5OiwyX +MsenQePll51MpglfArd7pUipUalCqlJt/Gs8kD16Ih1z1yuWYVTMlnDZ0PwbIOYn ++Jr8XLF9b1SMJt6PwckZZ0LZdIi2KwGAxVsIW1kjJAqu9o4YH37XW37yYdQRxfvv +lDiQlgX0JtmLgA== +-----END CERTIFICATE----- +-----BEGIN RSA PRIVATE KEY----- +MIICXAIBAAKBgQC9aHAEOzjdqSFF848Cj86TwfaMwejxRuhepAETvotA4k+kJ/Gm +1I8KRz1PpRsrPN0JaW5EFVA+hb/+C8rYoZOjfT6/33hAlXEmdtHSON1l432GpNeH +Ula2ZBjTDF6ipp56rZAHQ9KCTewO8oHH/EblYldJL5Pf9+ngjMDB6yJn4QIDAQAB +AoGACCuYIWaYll80UzslYRvo8lC8nOfEb5v6bBKxBTQD98GLY+5hKywiG3RlPalG +mb/fXQeSPReaRYgpdwD1OBEIOEMW9kLyqpzokC0xjpZ+MwsuJTlxCesk5GEsMa3o +wC3QMmiRA7qrZ/SzTtwrs++9mZ/pxp8JZ6pKYUj8SE7/vV0CQQDz8Ix2t40E16hx +04+XhClnGqydZJyLLSxcTU3ZVhYxL+efo/5hZ8tKpkcDi8wq6T03BOKrKxrlIW55 +qDRNM24rAkEAxsWzu/rJhIouQyNoYygEIEYzFRlTQyZSg59u6dNiewMn27dOAbyc +YT7B6da7e74QttTXo0lIllsX2S38+XsIIwJBANSRuIU3G66tkr5l4gnhhAaxqtuY +sgVhvvdL8dvC9aG1Ifzt9hzBSthpHxbK+oYmK07HdhI8hLpIMLHYzoK7n3MCQEy4 +4rccBcxyyYiAkjozp+QNNIpgTBMPJ6pGT7lRLiHtBeV4y1NASdv/LTnk+Fi69Bid +7t3H24ytfHcHmS1yn6ECQF6Jmh4C7dlvp59zXp+t+VsXxa/8sq41vKNIj0Rx9vh5 +xp9XL0C5ZpgmBnsTydP9pmkiL4ltLbMX0wJU6N2cmFw= +-----END RSA PRIVATE KEY----- diff --git a/demos/smime/signer2.pem b/demos/smime/signer2.pem new file mode 100644 index 0000000000..25e23d131a --- /dev/null +++ b/demos/smime/signer2.pem @@ -0,0 +1,32 @@ +-----BEGIN CERTIFICATE----- +MIICpjCCAg+gAwIBAgIJAJ+rfmEoLQRiMA0GCSqGSIb3DQEBBAUAMFcxCzAJBgNV +BAYTAlVLMRIwEAYDVQQHEwlUZXN0IENpdHkxFjAUBgNVBAoTDU9wZW5TU0wgR3Jv +dXAxHDAaBgNVBAMTE1Rlc3QgUy9NSU1FIFJvb3QgQ0EwHhcNMDcwNDEzMTgyOTQ0 +WhcNMTcwNDA5MTgyOTQ0WjBWMQswCQYDVQQGEwJVSzElMCMGA1UEAxMcT3BlblNT +TCB0ZXN0IFMvTUlNRSBzaWduZXIgMjEgMB4GCSqGSIb3DQEJARYRdGVzdDJAb3Bl +bnNzbC5vcmcwgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBANco7VPgX9vcGwmZ +jYqjq1JiR7M38dsMNhuJyLRVjJ5/cpFluQydQuG1PhzOJ8zfYVFicOXKvbYuKuXW +ozZIwzqEqWsNf36KHTLS6yOMG8I13cRInh+fAIKq9Z8Eh65I7FJzVsNsfEQrGfEW +GMA8us24IaSvP3QkbfHJn/4RaKznAgMBAAGjezB5MAkGA1UdEwQCMAAwLAYJYIZI +AYb4QgENBB8WHU9wZW5TU0wgR2VuZXJhdGVkIENlcnRpZmljYXRlMB0GA1UdDgQW +BBRlrLQJUB8uAa4q8B2OqvvTXonF5zAfBgNVHSMEGDAWgBRHUypxCXFQYqewhGo7 +2lWPQUsjoDANBgkqhkiG9w0BAQQFAAOBgQBQbi2juGALg2k9m1hKpzR2lCGmGO3X +h3Jh/l0vIxDr0RTgP2vBrtITlx655P/o1snoeTIpYG8uUnFnTE/6YakdayAIlxV4 +aZl63AivZMpQB5SPaPH/jEsGJ8UQMfdiy4ORWIULupuPKlKwODNw7tVhQIACS/DR +2aX6rl2JEuJ5Yg== +-----END CERTIFICATE----- +-----BEGIN RSA PRIVATE KEY----- +MIICXAIBAAKBgQDXKO1T4F/b3BsJmY2Ko6tSYkezN/HbDDYbici0VYyef3KRZbkM +nULhtT4czifM32FRYnDlyr22Lirl1qM2SMM6hKlrDX9+ih0y0usjjBvCNd3ESJ4f +nwCCqvWfBIeuSOxSc1bDbHxEKxnxFhjAPLrNuCGkrz90JG3xyZ/+EWis5wIDAQAB +AoGAUTB2bcIrKfGimjrBOGGOUmYXnD8uGnQ/LqENhU8K4vxApTD3ZRUqmbUknQYF +6r8YH/e/llasw8QkF9qod+F5GTgsnyh/aMidFHKrXXbf1662scz9+S6crSXq9Eb2 +CL57f6Kw61k6edrz8zHdA+rnTK00hzgzKCP4ZL5k8/55ueECQQD+BK+nsKi6CcKf +m3Mh61Sf2Icm5JlMCKaihlbnh78lBN1imYUAfHJEnQ1ujxXB94R+6o9S+XrWTnTX +2m/JNIfpAkEA2NaidX7Sv5jnRPkwJ02Srl0urxINLmg4bU0zmM3VoMklYBHWnMyr +upPZGPh5TzCa+g6FTBmU8XK61wvnEKNcTwJBAM24VdnlBIDGbsx8RJ3vzLU30xz4 +ff5J80okqjUQhwkgC3tTAZgHMTPITZyAXQqdvrxakoCMc6MkHxTBX08AMCECQHHL +SdyxXrYv7waSY0PtANJCkpJLveEhzqMFxdMmCjtj9BpTojYNbv3uQxtIopj9YAdk +gW2ray++zvC2DV/86x8CQH4UJwgO6JqU4bSgi6HiRNjDg26tJ0Beu8jjl1vrkIVX +pHFwSUeLZUsT2/iTUSgYH4uYiZPgYNcKTCT9W6se30A= +-----END RSA PRIVATE KEY----- diff --git a/demos/smime/smdec.c b/demos/smime/smdec.c new file mode 100644 index 0000000000..8b1a8545a6 --- /dev/null +++ b/demos/smime/smdec.c @@ -0,0 +1,83 @@ +/* Simple S/MIME signing example */ +#include +#include +#include + +int main(int argc, char **argv) + { + BIO *in = NULL, *out = NULL, *tbio = NULL; + X509 *rcert = NULL; + EVP_PKEY *rkey = NULL; + PKCS7 *p7 = NULL; + int ret = 1; + + OpenSSL_add_all_algorithms(); + ERR_load_crypto_strings(); + + /* Read in recipient certificate and private key */ + tbio = BIO_new_file("signer.pem", "r"); + + if (!tbio) + goto err; + + rcert = PEM_read_bio_X509(tbio, NULL, 0, NULL); + + BIO_reset(tbio); + + rkey = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL); + + if (!rcert || !rkey) + goto err; + + /* Open content being signed */ + + in = BIO_new_file("smencr.txt", "r"); + + if (!in) + goto err; + + /* Sign content */ + p7 = SMIME_read_PKCS7(in, NULL); + + if (!p7) + goto err; + + out = BIO_new_file("encrout.txt", "w"); + if (!out) + goto err; + + /* Decrypt S/MIME message */ + if (!PKCS7_decrypt(p7, rkey, rcert, out, 0)) + goto err; + + ret = 0; + + err: + + if (ret) + { + fprintf(stderr, "Error Signing Data\n"); + ERR_print_errors_fp(stderr); + } + + if (p7) + PKCS7_free(p7); + if (rcert) + X509_free(rcert); + if (rkey) + EVP_PKEY_free(rkey); + + if (in) + BIO_free(in); + if (out) + BIO_free(out); + if (tbio) + BIO_free(tbio); + + return ret; + + } + + + + diff --git a/demos/smime/smenc.c b/demos/smime/smenc.c new file mode 100644 index 0000000000..77dd732fc1 --- /dev/null +++ b/demos/smime/smenc.c @@ -0,0 +1,92 @@ +/* Simple S/MIME encrypt example */ +#include +#include +#include + +int main(int argc, char **argv) + { + BIO *in = NULL, *out = NULL, *tbio = NULL; + X509 *rcert = NULL; + STACK_OF(X509) *recips = NULL; + PKCS7 *p7 = NULL; + int ret = 1; + + /* + * On OpenSSL 0.9.9 only: + * for streaming set PKCS7_STREAM + */ + int flags = PKCS7_STREAM; + + OpenSSL_add_all_algorithms(); + ERR_load_crypto_strings(); + + /* Read in recipient certificate */ + tbio = BIO_new_file("signer.pem", "r"); + + if (!tbio) + goto err; + + rcert = PEM_read_bio_X509(tbio, NULL, 0, NULL); + + if (!rcert) + goto err; + + /* Create recipient STACK and add recipient cert to it */ + recips = sk_X509_new_null(); + + if (!recips || !sk_X509_push(recips, rcert)) + goto err; + + /* sk_X509_pop_free will free up recipient STACK and its contents + * so set rcert to NULL so it isn't freed up twice. + */ + rcert = NULL; + + /* Open content being encrypted */ + + in = BIO_new_file("encr.txt", "r"); + + if (!in) + goto err; + + /* encrypt content */ + p7 = PKCS7_encrypt(recips, in, EVP_des_ede3_cbc(), flags); + + if (!p7) + goto err; + + out = BIO_new_file("smencr.txt", "w"); + if (!out) + goto err; + + /* Write out S/MIME message */ + if (!SMIME_write_PKCS7(out, p7, in, flags)) + goto err; + + ret = 0; + + err: + + if (ret) + { + fprintf(stderr, "Error Encrypting Data\n"); + ERR_print_errors_fp(stderr); + } + + if (p7) + PKCS7_free(p7); + if (rcert) + X509_free(rcert); + if (recips) + sk_X509_pop_free(recips, X509_free); + + if (in) + BIO_free(in); + if (out) + BIO_free(out); + if (tbio) + BIO_free(tbio); + + return ret; + + } diff --git a/demos/smime/smsign.c b/demos/smime/smsign.c new file mode 100644 index 0000000000..ba78830cff --- /dev/null +++ b/demos/smime/smsign.c @@ -0,0 +1,89 @@ +/* Simple S/MIME signing example */ +#include +#include +#include + +int main(int argc, char **argv) + { + BIO *in = NULL, *out = NULL, *tbio = NULL; + X509 *scert = NULL; + EVP_PKEY *skey = NULL; + PKCS7 *p7 = NULL; + int ret = 1; + + /* For simple S/MIME signing use PKCS7_DETACHED. + * On OpenSSL 0.9.9 only: + * for streaming detached set PKCS7_DETACHED|PKCS7_STREAM + * for streaming non-detached set PKCS7_STREAM + */ + int flags = PKCS7_DETACHED|PKCS7_STREAM; + + OpenSSL_add_all_algorithms(); + ERR_load_crypto_strings(); + + /* Read in signer certificate and private key */ + tbio = BIO_new_file("signer.pem", "r"); + + if (!tbio) + goto err; + + scert = PEM_read_bio_X509(tbio, NULL, 0, NULL); + + BIO_reset(tbio); + + skey = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL); + + if (!scert || !skey) + goto err; + + /* Open content being signed */ + + in = BIO_new_file("sign.txt", "r"); + + if (!in) + goto err; + + /* Sign content */ + p7 = PKCS7_sign(scert, skey, NULL, in, flags); + + if (!p7) + goto err; + + out = BIO_new_file("smout.txt", "w"); + if (!out) + goto err; + + if (!(flags & PKCS7_STREAM)) + BIO_reset(in); + + /* Write out S/MIME message */ + if (!SMIME_write_PKCS7(out, p7, in, flags)) + goto err; + + ret = 0; + + err: + + if (ret) + { + fprintf(stderr, "Error Signing Data\n"); + ERR_print_errors_fp(stderr); + } + + if (p7) + PKCS7_free(p7); + if (scert) + X509_free(scert); + if (skey) + EVP_PKEY_free(skey); + + if (in) + BIO_free(in); + if (out) + BIO_free(out); + if (tbio) + BIO_free(tbio); + + return ret; + + } diff --git a/demos/smime/smsign2.c b/demos/smime/smsign2.c new file mode 100644 index 0000000000..566ad32bdf --- /dev/null +++ b/demos/smime/smsign2.c @@ -0,0 +1,107 @@ +/* S/MIME signing example: 2 signers. OpenSSL 0.9.9 only */ +#include +#include +#include + +int main(int argc, char **argv) + { + BIO *in = NULL, *out = NULL, *tbio = NULL; + X509 *scert = NULL, *scert2 = NULL; + EVP_PKEY *skey = NULL, *skey2 = NULL; + PKCS7 *p7 = NULL; + int ret = 1; + + OpenSSL_add_all_algorithms(); + ERR_load_crypto_strings(); + + tbio = BIO_new_file("signer.pem", "r"); + + if (!tbio) + goto err; + + scert = PEM_read_bio_X509(tbio, NULL, 0, NULL); + + BIO_reset(tbio); + + skey = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL); + + BIO_free(tbio); + + tbio = BIO_new_file("signer2.pem", "r"); + + if (!tbio) + goto err; + + scert2 = PEM_read_bio_X509(tbio, NULL, 0, NULL); + + BIO_reset(tbio); + + skey2 = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL); + + if (!scert2 || !skey2) + goto err; + + in = BIO_new_file("sign.txt", "r"); + + if (!in) + goto err; + + p7 = PKCS7_sign(NULL, NULL, NULL, in, PKCS7_STREAM|PKCS7_PARTIAL); + + if (!p7) + goto err; + + /* Add each signer in turn */ + + if (!PKCS7_sign_add_signer(p7, scert, skey, NULL, 0)) + goto err; + + if (!PKCS7_sign_add_signer(p7, scert2, skey2, NULL, 0)) + goto err; + + out = BIO_new_file("smout.txt", "w"); + if (!out) + goto err; + + /* NB: content included and finalized by SMIME_write_PKCS7 */ + + if (!SMIME_write_PKCS7(out, p7, in, PKCS7_STREAM)) + goto err; + + ret = 0; + + err: + + if (ret) + { + fprintf(stderr, "Error Signing Data\n"); + ERR_print_errors_fp(stderr); + } + + if (p7) + PKCS7_free(p7); + + if (scert) + X509_free(scert); + if (skey) + EVP_PKEY_free(skey); + + if (scert2) + X509_free(scert2); + if (skey) + EVP_PKEY_free(skey2); + + if (in) + BIO_free(in); + if (out) + BIO_free(out); + if (tbio) + BIO_free(tbio); + + return ret; + + } + + + + diff --git a/demos/smime/smver.c b/demos/smime/smver.c new file mode 100644 index 0000000000..9d360c273a --- /dev/null +++ b/demos/smime/smver.c @@ -0,0 +1,87 @@ +/* Simple S/MIME verification example */ +#include +#include +#include + +int main(int argc, char **argv) + { + BIO *in = NULL, *out = NULL, *tbio = NULL, *cont = NULL; + X509_STORE *st = NULL; + X509 *cacert = NULL; + PKCS7 *p7 = NULL; + + int ret = 1; + + OpenSSL_add_all_algorithms(); + ERR_load_crypto_strings(); + + /* Set up trusted CA certificate store */ + + st = X509_STORE_new(); + + /* Read in signer certificate and private key */ + tbio = BIO_new_file("cacert.pem", "r"); + + if (!tbio) + goto err; + + cacert = PEM_read_bio_X509(tbio, NULL, 0, NULL); + + if (!cacert) + goto err; + + if (!X509_STORE_add_cert(st, cacert)) + goto err; + + /* Open content being signed */ + + in = BIO_new_file("smout.txt", "r"); + + if (!in) + goto err; + + /* Sign content */ + p7 = SMIME_read_PKCS7(in, &cont); + + if (!p7) + goto err; + + /* File to output verified content to */ + out = BIO_new_file("smver.txt", "w"); + if (!out) + goto err; + + if (!PKCS7_verify(p7, NULL, st, cont, out, 0)) + { + fprintf(stderr, "Verification Failure\n"); + goto err; + } + + fprintf(stderr, "Verification Successful\n"); + + ret = 0; + + err: + + if (ret) + { + fprintf(stderr, "Error Verifying Data\n"); + ERR_print_errors_fp(stderr); + } + + if (p7) + PKCS7_free(p7); + + if (cacert) + X509_free(cacert); + + if (in) + BIO_free(in); + if (out) + BIO_free(out); + if (tbio) + BIO_free(tbio); + + return ret; + + } -- 2.25.1