fix: sigv4 auth to use base64-encoded content sha256 and custom canonical request#3120

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plusplusjiajia wants to merge 8 commits into

apache:mainfrom

plusplusjiajia:fix-sigv4-auth

Commits on Jun 12, 2026

Fix SigV4 auth to use base64-encoded content SHA256 and custom canonical request
plusplusjiajia
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Refactor _IcebergSigV4Auth to reuse canonical_request logic instead of rsplit
plusplusjiajia
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update test
plusplusjiajia
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Improve SigV4 tests and add botocore version reference
plusplusjiajia
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Fix mypy error: assert prepared.body is not None before hashing
plusplusjiajia
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add Java cross-language reference vector, harden body type handling
plusplusjiajia
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Move SigV4 request signing into the AuthManager abstraction
plusplusjiajia
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Align SigV4 auth with Java: sign relocated Authorization, validate config, add docs
plusplusjiajia
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