RSA_DECRYPT()

`RSA_DECRYPT()`

Decrypts data using an RSA private key and removes OAEP or PKCS 1.5 padding

Result type

VARBINARY

Syntax

RSA_DECRYPT (encrypted_input KEY private_key
  [LPARAM tag_string] [HASH <hash>] [PKCS_1_5])

<hash> ::= MD5 | SHA1 | SHA256 | SHA512

Table 1. `RSA_DECRYPT` Function Parameters
Parameter	Description
encrypted_input	Input data to decrypt
private_key	Private key to apply, PKCS#1 format
tag_string	An additional system-specific tag to identify which system encrypted the message;default is `NULL`.If the tag does not match what was used during encryption, `RSA_DECRYPT` will not decrypt the data.
hash	The hash used for OAEP padding;default is `SHA256`.

RSA_DECRYPT decrypts encrypted_input using the RSA private key and then removes padding from the resulting data.

By default, OAEP padding is used.The PKCS_1_5 option will switch to the less secure PKCS 1.5 padding.

Warning

The PKCS_1_5 option is only for backward compatibility with systems applying PKCS 1.5 padding.For security reasons, it should not be used in new projects.

Note	This function returns `VARBINARY`. When the encrypted data was text, it must be explicitly cast to a string type of appropriate character set.

RSA_DECRYPT()

RSA_DECRYPT()

RSA_DECRYPT Examples

`RSA_DECRYPT()`

`RSA_DECRYPT` Examples