Module: crypto/cfb

crypto/cfb

Source:

Requires

Methods

<static> decrypt(cipherfn, key, ciphertext, resync) → {String}

This function decrypts a given plaintext using the specified blockcipher to decrypt a message
Parameters:
Name Type Description
cipherfn String the algorithm cipher class to decrypt data in one block_size encryption, module:crypto/cipher.
key String binary string representation of key to be used to decrypt the ciphertext. This will be passed to the cipherfn
ciphertext String to be decrypted provided as a string
resync Boolean a boolean value specifying if a resync of the IV should be used or not. The encrypteddatapacket uses the "old" style with a resync. Decryption within an encryptedintegrityprotecteddata packet is not resyncing the IV.
Source:
Returns:
a string with the plaintext data
Type
String

<static> encrypt(prefixrandom, cipherfn, plaintext, key, resync) → {String}

This function encrypts a given with the specified prefixrandom using the specified blockcipher to encrypt a message
Parameters:
Name Type Description
prefixrandom String random bytes of block_size length provided as a string to be used in prefixing the data
cipherfn String the algorithm cipher class to encrypt data in one block_size encryption, module:crypto/cipher.
plaintext String data to be encrypted provided as a string
key String binary string representation of key to be used to encrypt the plaintext. This will be passed to the cipherfn
resync Boolean a boolean value specifying if a resync of the IV should be used or not. The encrypteddatapacket uses the "old" style with a resync. Encryption within an encryptedintegrityprotecteddata packet is not resyncing the IV.
Source:
Returns:
a string with the encrypted data
Type
String

<static> mdc(key, ciphertext) → {String}

Decrypts the prefixed data for the Modification Detection Code (MDC) computation
Parameters:
Name Type Description
cipherfn.encrypt String Cipher function to use,
key String binary string representation of key to be used to check the mdc This will be passed to the cipherfn
ciphertext String The encrypted data
Source:
See:
  • module:crypto/cipher.
Returns:
plaintext Data of D(ciphertext) with blocksize length +2
Type
String