age -R

age -R ~/.ssh/id_ed25519.pub -o your_confidential_file.txt.encrypted.age your_confidential_file.txt 

file your_confidential_file.txt.encrypted.age
your_confidential_file.txt.encrypted.age: data

head -n 1 your_confidential_file.txt.encrypted.age
age-encryption.org/v1

Related

• ansible-vault encrypt

See also

• age, Age encryption, age-keygen, age -e, age -R, age --armor, age --help, ~/.config/age