Can openssl convert SSH public key to a PEM file without private key?
So I've seen many many posts on how to do the conversion with private key; but does anyone one know how I can do this with just only public key? As I'm trying to convert someone else's public key.
Or is this something not possible and I need to ask them to generate one themselves?
ssh osx encryption openssl
asked Feb 11 at 10:27
Praveen PPraveen P
1032
add a comment |
So I've seen many many posts on how to do the conversion with private key; but does anyone one know how I can do this with just only public key? As I'm trying to convert someone else's public key.
Or is this something not possible and I need to ask them to generate one themselves?
ssh osx encryption openssl
asked Feb 11 at 10:27
Praveen PPraveen P
1032
1
PEM format can wrap up a few different things. Could you clarify. Are you trying to create a certificate (x509) or are you just trying to convert the public key format?
– Philip Couling
Feb 11 at 10:43
are you trying to get a private key from a public key ? assymetric key were meant to make this impossible. Could you give more details ?
– Archemar
Feb 11 at 10:45
@PhilipCouling Sorry, I should've added what I was trying to do. It is for encrypting files to share.
– Praveen P
Feb 11 at 10:59
add a comment |
So I've seen many many posts on how to do the conversion with private key; but does anyone one know how I can do this with just only public key? As I'm trying to convert someone else's public key.
Or is this something not possible and I need to ask them to generate one themselves?
ssh osx encryption openssl
asked Feb 11 at 10:27
Praveen PPraveen P
1032
So I've seen many many posts on how to do the conversion with private key; but does anyone one know how I can do this with just only public key? As I'm trying to convert someone else's public key.
Or is this something not possible and I need to ask them to generate one themselves?
ssh osx encryption openssl
ssh osx encryption openssl
asked Feb 11 at 10:27
Praveen PPraveen P
1032
asked Feb 11 at 10:27
Praveen PPraveen P
1032
asked Feb 11 at 10:27
Praveen PPraveen P
1032
asked Feb 11 at 10:27
Praveen PPraveen P
1032
asked Feb 11 at 10:27
Praveen PPraveen P
1032
1032
1
PEM format can wrap up a few different things. Could you clarify. Are you trying to create a certificate (x509) or are you just trying to convert the public key format?
– Philip Couling
Feb 11 at 10:43
are you trying to get a private key from a public key ? assymetric key were meant to make this impossible. Could you give more details ?
– Archemar
Feb 11 at 10:45
@PhilipCouling Sorry, I should've added what I was trying to do. It is for encrypting files to share.
– Praveen P
Feb 11 at 10:59
add a comment |
1
PEM format can wrap up a few different things. Could you clarify. Are you trying to create a certificate (x509) or are you just trying to convert the public key format?
– Philip Couling
Feb 11 at 10:43
are you trying to get a private key from a public key ? assymetric key were meant to make this impossible. Could you give more details ?
– Archemar
Feb 11 at 10:45
@PhilipCouling Sorry, I should've added what I was trying to do. It is for encrypting files to share.
– Praveen P
Feb 11 at 10:59
1
1
PEM format can wrap up a few different things. Could you clarify. Are you trying to create a certificate (x509) or are you just trying to convert the public key format?
– Philip Couling
Feb 11 at 10:43
PEM format can wrap up a few different things. Could you clarify. Are you trying to create a certificate (x509) or are you just trying to convert the public key format?
– Philip Couling
Feb 11 at 10:43
are you trying to get a private key from a public key ? assymetric key were meant to make this impossible. Could you give more details ?
– Archemar
Feb 11 at 10:45
are you trying to get a private key from a public key ? assymetric key were meant to make this impossible. Could you give more details ?
– Archemar
Feb 11 at 10:45
@PhilipCouling Sorry, I should've added what I was trying to do. It is for encrypting files to share.
– Praveen P
Feb 11 at 10:59
@PhilipCouling Sorry, I should've added what I was trying to do. It is for encrypting files to share.
– Praveen P
Feb 11 at 10:59
add a comment |
1 Answer
1
active
oldest
votes
If you are just looking to convert a public key, not create a certificate then you only need the public key.
ssh-keygen -f id_rsa.pub -e -m pem > id_rsa.pub.pem
Will read a public key file id_rsa.pub (containing just your friend's public key) and convert it to pem format.
The private key would be needed for something like a self signed certificate (in x509 format) because it's the private key that generates the signature.
answered Feb 11 at 10:55
Philip CoulingPhilip Couling
1,211917
Thank you; this is what I was looking for.
– Praveen P
Feb 11 at 11:02
add a comment |
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1 Answer
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1 Answer
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oldest
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oldest
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oldest
votes
If you are just looking to convert a public key, not create a certificate then you only need the public key.
ssh-keygen -f id_rsa.pub -e -m pem > id_rsa.pub.pem
Will read a public key file id_rsa.pub (containing just your friend's public key) and convert it to pem format.
The private key would be needed for something like a self signed certificate (in x509 format) because it's the private key that generates the signature.
answered Feb 11 at 10:55
Philip CoulingPhilip Couling
1,211917
Thank you; this is what I was looking for.
– Praveen P
Feb 11 at 11:02
add a comment |
If you are just looking to convert a public key, not create a certificate then you only need the public key.
ssh-keygen -f id_rsa.pub -e -m pem > id_rsa.pub.pem
Will read a public key file id_rsa.pub (containing just your friend's public key) and convert it to pem format.
The private key would be needed for something like a self signed certificate (in x509 format) because it's the private key that generates the signature.
answered Feb 11 at 10:55
Philip CoulingPhilip Couling
1,211917
Thank you; this is what I was looking for.
– Praveen P
Feb 11 at 11:02
add a comment |
If you are just looking to convert a public key, not create a certificate then you only need the public key.
ssh-keygen -f id_rsa.pub -e -m pem > id_rsa.pub.pem
Will read a public key file id_rsa.pub (containing just your friend's public key) and convert it to pem format.
The private key would be needed for something like a self signed certificate (in x509 format) because it's the private key that generates the signature.
answered Feb 11 at 10:55
Philip CoulingPhilip Couling
1,211917
If you are just looking to convert a public key, not create a certificate then you only need the public key.
ssh-keygen -f id_rsa.pub -e -m pem > id_rsa.pub.pem
Will read a public key file id_rsa.pub (containing just your friend's public key) and convert it to pem format.
The private key would be needed for something like a self signed certificate (in x509 format) because it's the private key that generates the signature.
answered Feb 11 at 10:55
Philip CoulingPhilip Couling
1,211917
answered Feb 11 at 10:55
Philip CoulingPhilip Couling
1,211917
answered Feb 11 at 10:55
Philip CoulingPhilip Couling
1,211917
answered Feb 11 at 10:55
Philip CoulingPhilip Couling
1,211917
1,211917
Thank you; this is what I was looking for.
– Praveen P
Feb 11 at 11:02
add a comment |
Thank you; this is what I was looking for.
– Praveen P
Feb 11 at 11:02
Thank you; this is what I was looking for.
– Praveen P
Feb 11 at 11:02
Thank you; this is what I was looking for.
– Praveen P
Feb 11 at 11:02
add a comment |
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1
PEM format can wrap up a few different things. Could you clarify. Are you trying to create a certificate (x509) or are you just trying to convert the public key format?
– Philip Couling
Feb 11 at 10:43
are you trying to get a private key from a public key ? assymetric key were meant to make this impossible. Could you give more details ?
– Archemar
Feb 11 at 10:45
@PhilipCouling Sorry, I should've added what I was trying to do. It is for encrypting files to share.
– Praveen P
Feb 11 at 10:59