crypto_evp_decrypt()

    
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Decrypts "plaintext" using the block cipher specified by "ciphername", placing the decrypted data into "plaintext".
Syntax 
crypto_evp_decrypt( ciphername, key, iv, encrypted, plaintext var )
Return 1 on success, 0 on failure.
  • ciphername = The OpenSSL identifier of the cipher, such as "bf-cbc" or "des-ede3-cbc".
  • key = The key used for encryption.
  • iv = The initialization vector used for encryption. returned by crypto_cipher_iv_length().
  • encrypted = The ciphertext to be decrypted
  • plaintext = [output] Receives the plaintext
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