Web Standardı ve RFC Özellikleri

Base64 vs Base64URL — Temel Farklar

Base64 vs Base64URL açıklama. Karakterler, padding, ne zaman kullan (JWT, OAuth, URL). RFC 4648 §4 vs §5.

Standart Base64 Neden Web URL'lerinde Hata Verir

Standard Base64 (RFC 4648 §4) uses the 64-character alphabet A-Z, a-z, 0-9, +, /, with = used as trailing byte padding.

However, when standard Base64 strings are passed in HTTP query parameters, URI path segments, or web cookies:

  • The plus sign + is automatically interpreted by web servers as a space character (%20), corrupting the payload.
  • The forward slash / is interpreted by web routers as a path delimiter, altering URL routing logic.
  • The equals sign = is used as a key-value parameter separator in query strings.

Alfabe Karakter Değişimleri (RFC 4648 §5)

FeatureStandard Base64Base64URL (URL-Safe)
Index 62+ (plus)- (hyphen)
Index 63/ (slash)_ (underscore)
Padding Character (=)Mandatory (Length % 4 == 0)Omitted or Unpadded

Çevrimiçi Araçları Deneyin

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