Off-the-Record Messaging
CRYPTOGRAPHIC PROTOCOL FOR INSTANT MESSAGING PROVIDING FORWARD SECRECY AND MALLEABLE ENCRYPTION USING 128-BIT AES, 1536-BIT DIFFIE–HELLMAN, AND SHA-1
Off-the-Record messaging; Off-the-record messaging; Off-the-record Messaging; OTR chat; Libotr; Off the record messaging; OTR messaging; OTR mode
Off-the-Record Messaging (OTR) is a cryptographic protocol that provides encryption for instant messaging conversations. OTR uses a combination of AES symmetric-key algorithm with 128 bits key length, the Diffie–Hellman key exchange with 1536 bits group size, and the SHA-1 hash function.