openssl_private_decrypt Decrypts data with private key boolopenssl_private_decrypt stringdata stringdecrypted mixedkey intpadding openssl_private_decrypt decrypts data that was previous encrypted via openssl_public_encrypt and stores the result into decrypted. key must be the private key corresponding that was used to encrypt the data. padding defaults to OPENSSL_PKCS1_PADDING, but can also be one of OPENSSL_SSLV23_PADDING, OPENSSL_PKCS1_OAEP_PADDING, OPENSSL_NO_PADDING. &return.success; You can use this function e.g. to decrypt data which were supposed only to you. See also openssl_public_encrypt and openssl_public_decrypt.