PuTTY bug pageant-ecdsa-assert-fail

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summary: Adding ECDSA key to running Pageant causes assertion failure
class: bug: This is clearly an actual problem we want fixed.
difficulty: fun: Just needs tuits, and not many of them.
priority: high: This should be fixed in the next release.
absent-in: 0.70
present-in: 0.71
fixed-in: 867e69187456b7b8a0c8d993d7d9c4963e15b0ca (0.72)

Attempting to add an ECDSA key to a running Pageant would cause Pageant to exit with an assertion failure:

File: ../sshecc.c
Line: 463
Expression: curve->type == EC_EDWARDS

A workaround is to specify the key on Pageant's command line when it starts.

The same assertion failure can occur in PuTTYgen, when attempting to import a new-format OpenSSH ECDSA key. A workaround is to convert it into some other format (such as an old-format OpenSSH key) first.

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Audit trail for this bug.

(last revision of this bug record was at 2019-03-22 01:20:34 +0000)