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Add standard Base64 encoding pattern #195

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Merged
brunoborges merged 1 commit into from
Aug 26, 2026
+61 −2
Merged

Add standard Base64 encoding pattern #195

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2 changes: 1 addition & 1 deletion content/security/key-derivation-functions.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,7 @@ whyModernWins:
support:
state: "available"
description: "Finalized in JDK 25 LTS (JEP 510, Sept 2025)."
prev: "security/pem-encoding"
prev: "security/standard-base64"
next: "security/strong-random"
related:
- "security/pem-encoding"
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2 changes: 1 addition & 1 deletion content/security/pem-encoding.yaml
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Expand Up @@ -40,7 +40,7 @@ support:
state: "preview"
description: "Preview in JDK 25 (JEP 470). Requires --enable-preview."
prev: "datetime/locale-of"
next: "security/key-derivation-functions"
next: "security/standard-base64"
related:
- "security/key-derivation-functions"
- "security/strong-random"
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47 changes: 47 additions & 0 deletions content/security/standard-base64.yaml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,47 @@
---
id: bffeb48b-eda4-4cd1-966d-e401ba9e75a6
slug: "standard-base64"
title: "Standard Base64 encoding and decoding"
category: "security"
difficulty: "beginner"
jdkVersion: "8"
oldLabel: "Internal JDK API"
modernLabel: "Java 8+"
oldApproach: "sun.misc encoder"
modernApproach: "Standard Base64 API"
oldCode: |-
String encoded = new sun.misc.BASE64Encoder()
.encode(data);
modernCode: |-
String encoded = Base64.getEncoder()
.encodeToString(data);
summary: "Use java.util.Base64 instead of internal JDK classes or third-party codecs."
explanation: "The standard Base64 API provides basic, URL-safe, and MIME encoders and\
\ decoders without relying on unsupported internal packages. Use getEncoder() and\
\ getDecoder() for standard Base64, or select the URL and MIME variants when the\
\ target format requires them."
whyModernWins:
- icon: "🛡️"
title: "Supported API"
desc: "Avoids inaccessible sun.misc implementation classes."
- icon: "🧩"
title: "Complete variants"
desc: "Includes basic, URL-safe, and MIME encoders and decoders."
- icon: "🚀"
title: "No dependency"
desc: "Encoding and decoding are built into the JDK."
support:
state: "available"
description: "Widely available since JDK 8 (March 2014)."
prev: "security/pem-encoding"
next: "security/key-derivation-functions"
related:
- "security/pem-encoding"
- "datetime/hex-format"
- "strings/string-chars-stream"
tags:
- security
- serialization
docs:
- title: "Base64"
href: "https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/util/Base64.html"
12 changes: 12 additions & 0 deletions proof/security/StandardBase64.java
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@@ -0,0 +1,12 @@
///usr/bin/env jbang "$0" "$@" ; exit $?
//JAVA 25+
import java.util.Base64;

/// Proof: standard-base64
/// Source: content/security/standard-base64.yaml
void main() {
byte[] data = "Java evolved".getBytes();

String encoded = Base64.getEncoder()
.encodeToString(data);
}