Other Constants
OPENSSL_RAW_DATA(int)- If
OPENSSL_RAW_DATAis set in the openssl_encrypt() or openssl_decrypt(), the returned data is returned as-is. When it is not specified, Base64 encoded data is returned to the caller. OPENSSL_DONT_ZERO_PAD_KEY(int)- Prevents openssl_encrypt() from padding keys that are shorter than the default key length.
OPENSSL_ZERO_PADDING(int)- By default encryption operations are padded using standard block padding and the padding is checked and removed when decrypting. If
OPENSSL_ZERO_PADDINGis set in the openssl_encrypt() or openssl_decrypt()optionsthen no padding is performed, the total amount of data encrypted or decrypted must then be a multiple of the block size or an error will occur. OPENSSL_ENCODING_SMIME(int)- Indicates that encoding is S/MIME.
OPENSSL_ENCODING_DER(int)- Indicates that encoding is DER.
OPENSSL_ENCODING_PEM(int)- Indicates that encoding is PEM.
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