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@hsiang-c hsiang-c commented Jan 16, 2026

Which issue does this PR close?

Rationale for this change

  • Iceberg spec supports AES key sizes of 128, 192 and 256 bits. Iceberg Rust depends on arrow-rs for Parquet I/O, I'd like to start supporting AES 256 with this PR.

What changes are included in this PR?

  • Without breaking the existing public APIs, I added a new_with_algorithm function to RingGcmBlockEncryptor and RingGcmBlockDecryptor, which takes one more Algorithm argument.

Are these changes tested?

Yes, unit test and on AES-256 encrypted Parquet files.

Are there any user-facing changes?

Yes, added a new API

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@xanderbailey xanderbailey left a comment

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When I exposed quote style here I exported the underlying QuoteStyle is that something we might want to do here also for Algorithm?

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[Parquet] Support other encryption/decryption key size

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