[BC/CWC] Wallet private key updates [1]#4068

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MichaelAJay wants to merge 53 commits intobitpay:masterfrom

MichaelAJay:wallet-privatekey-ref

Commits on Dec 11, 2025

add privateKeyToBuffer to IDeriver, implement method for concrete classes, & expose method with DeriverProxy
MichaelAJay
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And encryptBuffer & decryptToBuffer pairs to Encryption class.
MichaelAJay
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adds Storage.addKeysSafe method & implements private-key encrypted writes for wallets
MichaelAJay
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fix Deriver.privateKeyToBuffer call
MichaelAJay
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implement privateKeyBuffertoNativePrivateKey on IDeriver concrete classes and add passthrough on DeriverProxy
MichaelAJay
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add backwards-compatible attempt to decrypt key.privKey & serialize it to expected form
MichaelAJay
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fixed backwards compat issue and wrote tests to backwards compat
MichaelAJay
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bug fix
MichaelAJay
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fix BTCDeriver private key buffer to native private key
MichaelAJay
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Commits on Dec 15, 2025

fix Wallet.unlock buffer to string conversion
MichaelAJay
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Commits on Dec 16, 2025

add another backwards compatibility check for bitcoin core wallet
MichaelAJay
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Commits on Jan 27, 2026

update encrypt/decrypt methods with flexibility and buffer-first approach
MichaelAJay
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Commits on Jan 28, 2026

remove backwards compatibility, add migration method
MichaelAJay
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Commits on Feb 2, 2026

implementation complete, cleanup complete
MichaelAJay
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Commits on Feb 4, 2026

Commits on Feb 9, 2026

Commits on Feb 13, 2026

fix getPublicKey - rm private key to string
MichaelAJay
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Commits on Mar 10, 2026

update encrypt/decrypt methods to handle unspecified error conditions by wrapping in try/finally for buffer clearing
MichaelAJay
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Commits on Mar 13, 2026

Commits on Mar 19, 2026