create_as2_message.sh

#!/bin/bash

# AS2 Protocol Replication Script
# Generates newfile.mime.txt, newfile.signed.txt, and newfile.encrypted.txt
# Put the original content to be sent in file content.txt

echo "Step 1: Creating MIME structure..."
cat > newfile.mime.txt << 'EOF'
Content-Type: application/edi-x12; name=message.edi
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename=message.edi

EOF
base64 -i content.txt >> newfile.mime.txt

echo "Step 2: Creating signed multipart structure..."
# Use OpenSSL to create proper multipart/signed structure
openssl smime -sign -in newfile.mime.txt -signer /tmp/partner-signing-cert.pem -inkey /tmp/signing-key.pem -out newfile.signed.txt

echo "Step 3: Encrypting signed newfile..."
openssl smime -encrypt -in newfile.signed.txt -out newfile.encrypted.txt /tmp/encryption-cert.pem

echo "Step 4: Extracting raw encrypted data for AS2 transmission..."
# Skip MIME headers and get just the base64 content
awk '/^$/{flag=1;next} flag' newfile.encrypted.txt > newfile.encrypted.raw.txt

echo "Step 5: Converting to binary format..."
# Convert base64 to binary for Content-Transfer-Encoding: binary
base64 -d -i newfile.encrypted.raw.txt -o newfile.encrypted.bin

echo "AS2 protocol replication complete!"
echo "Generated files:"
echo "- newfile.mime.txt"
echo "- newfile.signed.txt" 
echo "- newfile.encrypted.txt"
echo "- newfile.encrypted.raw.txt (base64 data only)"
echo "- newfile.encrypted.bin (binary for AS2 transmission)"