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Merge pull request #3988 from gilles-peskine-arm/rsa_private-ret-2.16

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Backport 2.16: Fix an incorrect error code if RSA private operation glitched
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Gilles Peskine 2021-01-13 11:10:08 +01:00 committed by GitHub
parent 3fac0bae4a 3b7523e11e
commit 15c39e53e5
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2 changed files with 4 additions and 2 deletions
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ChangeLog.d/rsa_private-ret.txt Normal file
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@ -0,0 +1,2 @@
Bugfix
* Fix an incorrect error code if an RSA private operation glitched.

4
library/rsa.c
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@ -1106,10 +1106,10 @@ cleanup:
mbedtls_mpi_free( &C ); mbedtls_mpi_free( &C );
mbedtls_mpi_free( &I ); mbedtls_mpi_free( &I );
if( ret != 0 ) if( ret != 0 && ret >= -0x007f )
return( MBEDTLS_ERR_RSA_PRIVATE_FAILED + ret ); return( MBEDTLS_ERR_RSA_PRIVATE_FAILED + ret );
return( 0 ); return( ret );
} }
#if defined(MBEDTLS_PKCS1_V21) #if defined(MBEDTLS_PKCS1_V21)