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60 lines
1.1 KiB
60 lines
1.1 KiB
/* Simple S/MIME compress example */ |
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#include <openssl/pem.h> |
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#include <openssl/cms.h> |
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#include <openssl/err.h> |
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int main(int argc, char **argv) |
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{ |
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BIO *in = NULL, *out = NULL; |
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CMS_ContentInfo *cms = NULL; |
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int ret = 1; |
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/* |
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* On OpenSSL 1.0.0+ only: |
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* for streaming set CMS_STREAM |
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*/ |
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int flags = CMS_STREAM; |
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OpenSSL_add_all_algorithms(); |
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ERR_load_crypto_strings(); |
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/* Open content being compressed */ |
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in = BIO_new_file("comp.txt", "r"); |
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if (!in) |
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goto err; |
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/* compress content */ |
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cms = CMS_compress(in, NID_zlib_compression, flags); |
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if (!cms) |
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goto err; |
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out = BIO_new_file("smcomp.txt", "w"); |
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if (!out) |
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goto err; |
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/* Write out S/MIME message */ |
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if (!SMIME_write_CMS(out, cms, in, flags)) |
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goto err; |
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ret = 0; |
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err: |
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if (ret) { |
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fprintf(stderr, "Error Compressing Data\n"); |
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ERR_print_errors_fp(stderr); |
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} |
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if (cms) |
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CMS_ContentInfo_free(cms); |
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if (in) |
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BIO_free(in); |
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if (out) |
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BIO_free(out); |
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return ret; |
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}
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