Punycode
An encoding scheme defined in RFC 3492 that converts internationalized domain names containing Unicode characters into pure ASCII strings prefixed with `xn--`. The encoding is reversible but performs no normalization or security validation of characters.
Timeline (last 90 days)
Punycode encoding is represented as an ASCII string beginning with xn--, used for DNS queries; for example, münchen.de is encoded as xn--mnchen-3ya.de.
Punycode is an encoding scheme defined in RFC 3492 that converts internationalized domain names containing Unicode characters into pure ASCII strings.
Punycode's design goal is to guarantee reversibility while keeping the encoded length as short as possible, but it is not responsible for character normalization or security validation, so visually similar but distinct code points yield different Punycode results, which becomes the technical basis for homograph attacks.
All Facts (3)
Punycode encoding is represented as an ASCII string beginning with xn--, used for DNS queries; for example, münchen.de is encoded as xn--mnchen-3ya.de.
50%UnverifiedPunycode is an encoding scheme defined in RFC 3492 that converts internationalized domain names containing Unicode characters into pure ASCII strings.
50%UnverifiedPunycode's design goal is to guarantee reversibility while keeping the encoded length as short as possible, but it is not responsible for character normalization or security validation, so visually similar but distinct code points yield different Punycode results, which becomes the technical basis for homograph attacks.
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