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Agec is a simple file encryption tool that implements the age format in C with minimal dependencies. The tool supports asymmetric encryption based on X25519, and a passphrase encryption based on scrypt. https://git.sr.ht/~min/agec https://age-encryption.org Encryption is silently broken for files <35 bytes, so add a patch submitted upstream to fix that. Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
36 lines
1.0 KiB
Diff
36 lines
1.0 KiB
Diff
From eb8ccfe5bb32273226d80236caab7a9386d71071 Mon Sep 17 00:00:00 2001
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From: Peter Korsgaard <peter@korsgaard.com>
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Date: Thu, 18 Jun 2026 15:12:38 +0200
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Subject: [PATCH] io.c: isarmor(): do not set eof for <35 byte files
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Encryption is silently broken for <35 byte files since commit b374d8de5a
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("stop reading after first EOF"), as readall() sets the eof flag when it was
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unable to read the entire 35 bytes in isarmor(), causing bread() to return
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EOF and ignore the <35 bytes already read.
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Fix it by only setting the eof flag in isarmor() if nothing could be read.
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Upstream: mailed to amin@firemail.cc
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Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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---
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io.c | 3 +--
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1 file changed, 1 insertion(+), 2 deletions(-)
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diff --git a/io.c b/io.c
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index 15ed4f7..2773022 100644
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--- a/io.c
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+++ b/io.c
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@@ -128,8 +128,7 @@ isarmor(Ibuf *b)
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nr = readall(b->fd, b->buf, sizeof(armorfirst) - 1, &b->eof);
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if(nr == -1)
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return -1;
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- if(nr == 0)
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- b->eof = 1;
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+ b->eof = (nr == 0);
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b->size = nr;
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if((usize)nr < sizeof(armorfirst) - 1)
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return 0;
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--
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2.47.3
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