PHP uses OpenSSL for RSA Long Data Encryption (117) decryption (128) and DES encryption decryption

PHP uses OpenSSL for RSA encryption, if the plaintext to be encrypted is too long error, workaround: Encrypt the time 117 characters to encrypt once, and then all the cipher stitching into a cipher text, the decryption time needs 128 characters to decrypt, and then splicing into data.

Encryption:

/** *     Encryption     * @param $originalData     * @return string|void     *    //*function Encrypt ($originalData) {        if (Openssl_private_encrypt ($originalData, $encryptData, $this->rsaprivatekey)) {        if (openssl_public_ Encrypt ($originalData, $encryptData, $this->rsapublickey)) {            return Base64_encode ($encryptData);        } else {            return false;        }    } *    /function Encrypt ($originalData) {        $crypto = ';        foreach (Str_split ($originalData, 117) as $chunk) {            openssl_public_encrypt ($chunk, $encryptData, $this, Rsapublickey);            $crypto. = $encryptData;        }        Return Base64_encode ($crypto);    }

Decrypt:

/**     * Private key decryption     * @param $encryptData *    //*function Decrypt ($encryptData) {        //if (openssl_public_ Decrypt (Base64_decode ($encryptData), $decryptData, $this->rsapublickey)) {        if (Openssl_private_decrypt ( Base64_decode ($encryptData), $decryptData, $this->rsaprivatekey)) {            return $decryptData;        } else {            return false;        }    } *    /function Decrypt ($encryptData) {        $crypto = ';        foreach (Base64_decode ($encryptData), str_split) as $chunk) {            openssl_private_decrypt ($chunk, $decryptData, $this->rsaprivatekey);            $crypto. = $decryptData;        }        return $crypto;    }

DES Encryption and decryption:

function Encrypt ($encrypt, $key) {$passcrypt = Mcrypt_encrypt (Mcrypt_des, $key, $encrypt, MCRYPT_MODE_CBC, $key); $ encode = Base64_encode ($passcrypt); return $encode;} function Decrypt ($decrypt, $key) {$decoded = Base64_decode ($decrypt); $decrypted = Mcrypt_decrypt (Mcrypt_des, $key, $ Decoded, MCRYPT_MODE_ECB, $key); return $decrypted;}

AES Encryption Decryption

Create random initial vectors for CBC mode $iv_size = Mcrypt_get_iv_size (mcrypt_rijndael_128, MCRYPT_MODE_CBC); $iv = Mcrypt_create_iv ($iv _ Size, Mcrypt_rand), function Aesencrypt ($encrypt, $key, $iv) {$passcrypt = Mcrypt_encrypt (mcrypt_rijndael_128, $key, $ Encrypt, MCRYPT_MODE_CBC, $IV);//append the initial vector to the ciphertext for decryption using $passcrypt = $iv. $passcrypt;//base64 encoding of ciphertext $encode = Base64_encode ($passcrypt); return $encode;} function Aesdecrypt ($decrypt, $key, $iv _size) {$decoded = Base64_decode ($decrypt);//initial vector size, can be mcrypt_get_iv_size () To obtain $iv_dec = substr ($decoded, 0, $iv _size);//Gets the ciphertext except the initial vector $decoded = substr ($decoded, $iv _size);//may need to be removed from the end of the clear text 0$ decrypted = Mcrypt_decrypt (mcrypt_rijndael_128, $key, $decoded, MCRYPT_MODE_ECB, $iv _dec); return $decrypted;}

　　

PHP uses OpenSSL for RSA Long Data Encryption (117) decryption (128) and DES encryption decryption