1PKCS7_decrypt(3) OpenSSL PKCS7_decrypt(3)
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6 PKCS7_decrypt - decrypt content from a PKCS#7 envelopedData structure
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9 int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int
10 flags);
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13 PKCS7_decrypt() extracts and decrypts the content from a PKCS#7
14 envelopedData structure. pkey is the private key of the recipient, cert
15 is the recipients certificate, data is a BIO to write the content to
16 and flags is an optional set of flags.
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19 OpenSSL_add_all_algorithms() (or equivalent) should be called before
20 using this function or errors about unknown algorithms will occur.
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22 Although the recipients certificate is not needed to decrypt the data
23 it is needed to locate the appropriate (of possible several) recipients
24 in the PKCS#7 structure.
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26 The following flags can be passed in the flags parameter.
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28 If the PKCS7_TEXT flag is set MIME headers for type text/plain are
29 deleted from the content. If the content is not of type text/plain then
30 an error is returned.
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33 PKCS7_decrypt() returns either 1 for success or 0 for failure. The
34 error can be obtained from ERR_get_error(3)
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37 PKCS7_decrypt() must be passed the correct recipient key and certifi‐
38 cate. It would be better if it could look up the correct key and cer‐
39 tificate from a database.
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41 The lack of single pass processing and need to hold all data in memory
42 as mentioned in PKCS7_sign() also applies to PKCS7_verify().
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45 ERR_get_error(3), PKCS7_encrypt(3)
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48 PKCS7_decrypt() was added to OpenSSL 0.9.5
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520.9.8b 2002-10-09 PKCS7_decrypt(3)