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% File src/library/tools/man/checkMD5sums.Rd
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% File src/library/tools/man/checkMD5sums.Rd
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% Part of the R package, https://www.R-project.org
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% Part of the R package, https://www.R-project.org
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% Copyright 1995-2015 R Core Team
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% Copyright 1995-2026 R Core Team
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% Distributed under GPL 2 or later
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% Distributed under GPL 2 or later
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\name{checkMD5sums}
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\name{checkMD5sums}
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\alias{checkMD5sums}
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\alias{checkMD5sums}
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\title{Check and Create MD5 Checksum Files}
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\title{Check and Create \file{MD5} Checksum Files}
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\description{
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\description{
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  \code{checkMD5sums} checks the files against a file \file{MD5}.
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  \code{checkMD5sums} checks the files against a file \file{MD5}.
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}
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}
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\usage{
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\usage{
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checkMD5sums(package, dir)
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checkMD5sums(package, dir)
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  If \code{dir} is missing, an installed package of name \code{package}
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  If \code{dir} is missing, an installed package of name \code{package}
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  is searched for.
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  is searched for.
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  The private function \code{tools:::.installMD5sums} is used to create
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  The private function \code{tools:::.installMD5sums} is used to create
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  \code{MD5} files.
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  \file{MD5} files.
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}
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}
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\note{
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\note{
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  The use of the \code{MD5} files has been deprecated in favor of
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  As from \R 4.6.0, the use of \file{MD5} files has been deprecated in
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  \code{SHA256} files checked by \code{\link{checkSHA256sums}} since
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  favor of \file{SHA256} files checked by \code{\link{checkSHA256sums}},
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  MD5 hashes are succeptible to hash-collision and length-extension
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  since MD5 hashes are susceptible to hash-collision and length-extension
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  attacks and therefore are only suitable for integrity checks and not
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  attacks and therefore are only suitable for integrity checks and not
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  for verification of authenticity.
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  for verification of authenticity.
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}
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}
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\value{
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\value{
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  \code{checkMD5sums} returns a logical, \code{NA} if there is no
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  \code{checkMD5sums} returns a logical, \code{NA} if there is no