Diffusion libgcrypt 3a16c19d4d63

DSA,ECDSA: Fix use of mpi_invm.
3a16c19d4d63
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Description

DSA,ECDSA: Fix use of mpi_invm.

* cipher/dsa.c (sign): Call mpi_invm before _gcry_dsa_modify_k.
* cipher/ecc-ecdsa.c (_gcry_ecc_ecdsa_sign): Likewise.

Backported master commit of:
ada758e3019c2585213a132960613b1ac48502b8

GnuPG-bug-id: T4869
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>

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Authored on Mar 18 2020, 1:08 AM

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rC90b7339b0654: mpi: Constant time mpi_inv with some conditions.

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T4869: constant-time mpi_invm

Event Timeline

• gniibe committed rC3a16c19d4d63: DSA,ECDSA: Fix use of mpi_invm. (authored by • gniibe).Mar 18 2020, 1:17 AM

• gniibe committed rC3a16c19d4d63: DSA,ECDSA: Fix use of mpi_invm. (authored by • gniibe).

• gniibe added a task: T4869: constant-time mpi_invm.Jun 3 2021, 7:08 PM

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cipher/

rC3a16c19d4d63

cipher/dsa.c

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cipher/ecc-ecdsa.c

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