Cryptography
Encoding
Not encryption.
- •100 XPASCII & UnicodeHow text becomes numbers.
- •100 XPHexBase 16 and the art of the hex dump.
- •150 XPBase64Binary-safe text with a 6-bit trick.
- •100 XPURL / Percent EncodingWhy `?q=hello%20world` looks the way it does.
- •150 XPBinary, Octal, Base32 & Base58One bit at a time.
- •180 XPUTF-8 & Unicode NormalizationVariable-byte encoding, leading vs continuation bytes, and why string length is a lie.
- •170 XPBase32 & Base58Alternative base encodings — when Base64 is the wrong tool.
- •180 XPPercent-Encoding, In Depthform vs path vs query · the double-encoding trap.
- •200 XPPEM & ASN.1Why every TLS/PGP/SSH key file looks similar but isn't.