Security
Excel Field-Level Encryptor
Encrypt specific fields in Excel files using various encryption methods to protect sensitive information
file· File resultOpen tool
Quick start
Call this tool from your code in three languages.
cURL
# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/excel-field-encryptor' \
-H 'Content-Type: application/json' \
-d '{"filename":"excelFile.ext","contentType":"application/octet-stream","size":12345}'
# 2) PUT the file bytes directly to the presigned uploadUrl
curl -X PUT '<presigned uploadUrl>' \
--data-binary @/path/to/file.ext
# 3) Call the tool, passing the returned storageKey for each file field
curl -X POST 'https://api.elysiatools.com/en/api/tools/excel-field-encryptor' \
-F 'excelFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'encryptionMethod=base64' \
-F 'selectedFields=Comma-separated field names (e.g., Email,Phone,SSN). Leave empty to encrypt all fields.' \
-F 'encryptionKey=Enter encryption key (required for AES encryption)' \
-F 'caesarShift=3' \
-F 'worksheetIndex=0' \
-F 'hasHeader=true' \
-F 'outputFormat=excel' \
-F 'encryptedOnly=false'