Radix-64 Encoding is a simple mapping scheme which accepts 24-bit input and produce 32 bits of output. Each set of 6 bits in 24-bit block is mapped into a character which is then encoded as 8-bit quantities.
Radix-64 Encoding
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Pretty Good Privacy (PGP)
PGP is a #Asymmetric Cryptographic program used to encrypt, decrypt and sign emails over insecure transmission channel such as Internet with Digital Signature# which is developed by Philip R. Zimmermann in 1991. It has become the de facto #standard for email security. It provides five services: Confidentiality#, Authentication#, compression, e-mail compatibility (encode raw binary to ASCII characters using Radix-64 Encoding#) and segmentation (if the message is too large). It guarantees the security in Application Layer#.