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File name : smime.rc

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# -*-muttrc-*-
## The following options are only available if you have
## compiled in S/MIME support

# If you compiled mutt with support for both PGP and S/MIME, PGP
# will be the default method unless the following option is set
#set smime_is_default

# Uncomment this if you don't want to set labels for certificates you add.
# unset smime_ask_cert_label

# Passphrase expiration
#set smime_timeout=300

# Global crypto options -- these affect PGP operations as well.
#set crypt_autosign = yes
#set crypt_replyencrypt = yes
#set crypt_replysign = yes
#set crypt_replysignencrypted = yes
#set crypt_verify_sig = yes

# Section A: Key Management

# The default keyfile for encryption (used by $smime_self_encrypt and
# $postpone_encrypt).
#
# It will also be used for decryption unless
# $smime_decrypt_use_default_key is unset.
#
# It will additionally be used for signing unless $smime_sign_as is
# set to a key.
#
# Unless your key does not have encryption capability, uncomment this
# line and replace the keyid with your own.
#
# set smime_default_key="12345678.0"

# If you have a separate signing key, or your key _only_ has signing
# capability, uncomment this line and replace the keyid with your
# signing keyid.
#
# set smime_sign_as="87654321.0"

# Uncomment to make mutt ask what key to use when trying to decrypt a message.
# It will use the default key above (if that was set) else.
# unset smime_decrypt_use_default_key

# Path to a file or directory with trusted certificates
#set smime_ca_location="~/.smime/ca-bundle.crt"
set smime_ca_location=`for f in $HOME/.smime/ca-certificates.crt $HOME/.smime/ca-bundle.crt /etc/ssl/certs/ca-certificates.crt ; do if [ -e $f ] ; then echo $f ; exit ; fi ; done`

# Path to where all known certificates go. (must exist!)
set smime_certificates="~/.smime/certificates"

# Path to where all private keys go. (must exist!)
set smime_keys="~/.smime/keys"

# These are used to extract a certificate from a message.
# First generate a PKCS#7 structure from the message.
set smime_pk7out_command="openssl smime -verify -in %f -noverify -pk7out"

# Extract the included certificate(s) from a PKCS#7 structure.
set smime_get_cert_command="openssl pkcs7 -print_certs -in %f"

# Extract the signer's certificate only from a S/MIME signature (sender verification)
set smime_get_signer_cert_command="openssl smime -verify -in %f -noverify -signer %c -out /dev/null"

# This is used to get the email address the certificate was issued to.
set smime_get_cert_email_command="openssl x509 -in %f -noout -email"

# Add a certificate to the database using smime_keys.
set smime_import_cert_command="smime_keys add_cert %f"

# Section B: Outgoing messages

# Algorithm to use for encryption.
# valid choices are aes128, aes192, aes256, rc2-40, rc2-64, rc2-128, des, des3
set smime_encrypt_with="aes256"

# Encrypt a message.  Input file is a MIME entity.
set smime_encrypt_command="openssl smime -encrypt -%a -outform DER -in %f %c"

# Algorithm for the signature message digest.
# Valid choices are md5, sha1, sha224, sha256, sha384, sha512.
set smime_sign_digest_alg="sha256"

# Sign.
set smime_sign_command="openssl smime -sign -md %d -signer %c -inkey %k -passin stdin -in %f -certfile %i -outform DER"

# Section C: Incoming messages

# Decrypt a message.  Output is a MIME entity.
set smime_decrypt_command="openssl cms -decrypt -passin stdin -inform DER -in %f -inkey %k -recip %c"

# Verify a signature of type multipart/signed
set smime_verify_command="openssl smime -verify -inform DER -in %s %C -content %f"

# Verify a signature of type application/x-pkcs7-mime
set smime_verify_opaque_command="\
openssl smime -verify -inform DER -in %s %C || \
openssl smime -verify -inform DER -in %s -noverify 2>/dev/null"

# Section D: Alternatives

# Sign.  If you wish to NOT include the certificate your CA used in signing
# your public key, use this command instead.
# set smime_sign_command="openssl smime -sign -md %d -signer %c -inkey %k -passin stdin -in %f -outform DER"
#
# In order to verify the signature only and skip checking the certificate chain:
#
# set smime_verify_command="openssl smime -verify -inform DER -in %s -content %f -noverify"
# set smime_verify_opaque_command="openssl smime -verify -inform DER -in %s -noverify"
#