diff options
author | Dr. Stephen Henson <steve@openssl.org> | 2008-04-11 16:52:45 +0000 |
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committer | Dr. Stephen Henson <steve@openssl.org> | 2008-04-11 16:52:45 +0000 |
commit | 3b28bc9910e12a8c34fb4643788e94b5c3bd184d (patch) | |
tree | 2625d64d4d8c51c872b9ee3e9e35b9349bb1f9da /demos/cms/cms_sign.c | |
parent | fc003bcecbb99c2a3673d77791459ad54fce49c3 (diff) |
PKCS#7 examples converted to CMS.
Diffstat (limited to 'demos/cms/cms_sign.c')
-rw-r--r-- | demos/cms/cms_sign.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/demos/cms/cms_sign.c b/demos/cms/cms_sign.c new file mode 100644 index 0000000000..42f762034b --- /dev/null +++ b/demos/cms/cms_sign.c @@ -0,0 +1,89 @@ +/* Simple S/MIME signing example */ +#include <openssl/pem.h> +#include <openssl/cms.h> +#include <openssl/err.h> + +int main(int argc, char **argv) + { + BIO *in = NULL, *out = NULL, *tbio = NULL; + X509 *scert = NULL; + EVP_PKEY *skey = NULL; + CMS_ContentInfo *cms = NULL; + int ret = 1; + + /* For simple S/MIME signing use CMS_DETACHED. + * On OpenSSL 0.9.9 only: + * for streaming detached set CMS_DETACHED|CMS_STREAM + * for streaming non-detached set CMS_STREAM + */ + int flags = CMS_DETACHED|CMS_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 */ + cms = CMS_sign(scert, skey, NULL, in, flags); + + if (!cms) + goto err; + + out = BIO_new_file("smout.txt", "w"); + if (!out) + goto err; + + if (!(flags & CMS_STREAM)) + BIO_reset(in); + + /* Write out S/MIME message */ + if (!SMIME_write_CMS(out, cms, in, flags)) + goto err; + + ret = 0; + + err: + + if (ret) + { + fprintf(stderr, "Error Signing Data\n"); + ERR_print_errors_fp(stderr); + } + + if (cms) + CMS_ContentInfo_free(cms); + 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; + + } |