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- Asymmetric encryption of an envelope
EncryptAsymmetricEnveloped (Function) In french: CrypteAsymétriqueEnveloppé
 Warning
From version 28, EncryptAsymmetricEnvelopped is kept for backward compatibility. This function is replaced by EncryptAsymmetricEnveloped.
Performs an asymmetric encryption of an envelope. // Encrypting a character string
//---------------------------------------
bufToEncrypt is Buffer = "Message to encrypt"
bufEncryptedMessage is Buffer
sPublicKeyFile is string = fExeDir() + "\PublicKey.pem"
sPublicKeyPassword is string = "xxx"
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bufEncryptedMessage = EncryptAsymmetricEnveloped(bufToEncrypt, sPublicKeyFile, ...
sPublicKeyPassword)
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// Decryption Â
// -------------
bufEncryptedMessage is Buffer
bufDecryptedMessage is Buffer
sPrivateKeyFile is string = fExeDir() + "\PrivateKey.pem"
sPrivateKeyPassword is string = "xxx"
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bufDecryptedMessage = DecryptAsymmetricEnveloped(bufEncryptedMessage, sPrivateKeyFile, ...
sPrivateKeyPassword) bufToEncrypt is Buffer = "Message to encrypt"
bufEncryptedMessage is Buffer
bufPublicKey is Buffer
bufPrivateKey is Buffer
(bufPrivateKey, bufPublicKey) = EncryptGenerateRSAKey(1024)
// Encrypting a character string
//---------------------------------------
bufEncryptedMessage = EncryptAsymmetricEnveloped(bufToEncrypt, bufPublicKey)
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// Decryption Â
// -------------
bufEncryptedMessage is Buffer
bufDecryptedMessage is Buffer
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bufDecryptedMessage = DecryptAsymmetricEnveloped(bufEncryptedMessage, bufPrivateKey)
Syntax
<Result> = EncryptAsymmetricEnveloped(<Content to encrypt> , <Public key file> [, <Password>])
<Result>: Buffer All the information necessary for decryption (algorithms used, encrypted key, initialization vector and encrypted buffer). <Content to encrypt>: Buffer Buffer to encrypt. <Public key file>: Character string or Buffer - Name and path of the file corresponding to the public key that will be used to encrypt. pem, der and p12 key formats are supported.
- Buffer containing the public key that will be used for the encryption.
<Password>: Optional character string Key file password (if required). Remarks Asymmetric encryption of an envelope EncryptAsymmetricEnveloped generates a random encryption key that will be used to encrypt <Content to encrypt> with a symmetric algorithm. The key is encrypted with the public key of <Public key file>. <Result> contains a buffer that concatenates all the necessary information for the decryption (algorithms used, encrypted key, initialization buffer and encrypted buffer). Remarks: - The private key is encrypted using OAEP padding.
- The message is encrypted using AES 256 in CBC with PKCS padding.
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