cryptography(The study or analysis of codes and encoding methods used to secure information. Cryptography is used to provide confidentiality, data integrity, authentication (entity and data origin), and nonrepudiation); encryption(The process of converting readable data (plaintext) into a coded form (ciphertext) to prevent it from being read by an unauthorized party)
RSA encryption(The patented public key encryption method, introduced by Ronald Rivest, Adi Shamir, and Leonard Adleman in 1978, on which the PGP (Pretty Good Privacy) encryption program is based)
TLS encryption(A generic security protocol similar to Secure Sockets Layer (SSL), used with Simple Mail Transfer Protocol (SMTP)); Transport Layer Security encryption(A generic security protocol similar to Secure Sockets Layer (SSL), used with Simple Mail Transfer Protocol (SMTP))
