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blake2: reject a digest size below 1 #166

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Merged
dinosaure merged 1 commit into from
Jun 26, 2026
Merged

blake2: reject a digest size below 1 #166

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2 changes: 1 addition & 1 deletion src-c/digestif.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -324,7 +324,7 @@ end

module Make_BLAKE2 (F : Foreign_BLAKE2) (D : Desc) = struct
let () =
if D.digest_size > F.max_outlen ()
if D.digest_size < 1 || D.digest_size > F.max_outlen ()
then
failwith "Invalid digest_size:%d to make a BLAKE2{S,B} implementation"
D.digest_size
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2 changes: 1 addition & 1 deletion src-ocaml/digestif.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -294,7 +294,7 @@ end

module Make_BLAKE2 (H : Hash_BLAKE2) (D : Desc) = struct
let () =
if D.digest_size > H.max_outlen
if D.digest_size < 1 || D.digest_size > H.max_outlen
then
failwith "Invalid digest_size:%d to make a BLAKE2{S,B} implementation"
D.digest_size
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