[CODEC-343] Fix Base32 hex decode table builder#435
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garydgregory merged 2 commits intoJun 18, 2026
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Configure setHexDecodeTable(boolean) with the matching encode table instead of passing a decode lookup table to setEncodeTable(byte...). Add a regression test showing the configured codec encodes with the Base32-Hex alphabet and decodes its own output. Reviewed-by: OpenAI Codex Reviewed-by: Anthropic Claude Code
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Summary
Fix
Base32.Builder#setHexDecodeTable(boolean)so it configures the matching Base32/Base32-Hex encode table instead of passing a decode lookup table tosetEncodeTable(byte...).Details
The previous implementation passed
decodeTable(useHex)intosetEncodeTable(...). Used on its own, this made the codec encode with a decode lookup table and emit invalid bytes.This change updates
setHexDecodeTable(boolean)to useencodeTable(useHex)and adds a regression test proving the configured codec encodes with the Base32-Hex alphabet and decodes its own output.Tests
mvn -q -Dtest=org.apache.commons.codec.binary.Base32Test testmvn -q javadoc:javadocmvn -q