docs(mpc): document that reducedEncryptedPrv contains private key material#8405
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docs(mpc): document that reducedEncryptedPrv contains private key material#8405
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contains private key material Add JSDoc/inline comments to ReducedKeyShareType, getReducedKeyShare(), reducedEncryptedPrv field, and the encryption block in ecdsaMPCv2.ts clarifying that prv is the party's private scalar s_i and that the resulting reducedEncryptedPrv on the key card QR code is a second copy of private key material. Ticket: WP-8474
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mukeshsp
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Apr 8, 2026
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Document clearly that
reducedEncryptedPrvandReducedKeyShare.prvcontain private key material (s_i).Changes
modules/sdk-lib-mpc/src/tss/ecdsa-dkls/types.ts— Added JSDoc onReducedKeyShareTypedocumenting each field, specifically thatprvis the party's private scalar s_i and is sensitive private key material.modules/sdk-lib-mpc/src/tss/ecdsa-dkls/dkg.ts— Added JSDoc ongetReducedKeyShare()documenting that the returned buffer contains private key material (s_i) and is stored asreducedEncryptedPrvon the key card QR code.modules/sdk-core/src/bitgo/keychain/iKeychains.ts— Expanded comment onreducedEncryptedPrvto state it contains the party's private scalar (s_i).modules/sdk-core/src/bitgo/utils/tss/ecdsa/ecdsaMPCv2.ts— Added comment above thereducedEncryptedPrvencryption block noting it produces an encrypted copy of private key material stored on the key card QR code.Comments only — no logic changes. Both modules lint cleanly.
Ticket: WAL-439