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However regarding the usage in browsers is there any difference between the curves used in ECDHE and ECDSA?

No, there probably isn'tis not. As the key establishment and certificate verification is likely to be in the same crypto API it'sit is pretty likely that the same curves are supported (or not).

Do browsers support the same curves for every elliptical curves algorithm?

That's pretty likely because of the same reasons.

IsDo they possibly even always used the same curve for ECDHE and ECDSA in TLS_ECDHE_ECDSA?

The curve for the ECDSA part depends on the certificate used. The key in the certificate is static while the ECDH keys are ephemeral. So it'sit is likely that shorter curves are used for ECDH than ECDSA. There isn'tis not a direct connection between the two in the protocol, so although the same curve may be used, it'sit is certainly not a given.

However regarding the usage in browsers is there any difference between the curves used in ECDHE and ECDSA?

No, there probably isn't. As the key establishment and certificate verification is likely to be in the same crypto API it's pretty likely that the same curves are supported (or not).

Do browsers support the same curves for every elliptical curves algorithm?

That's pretty likely because of the same reasons.

Is they possibly even always used the same curve for ECDHE and ECDSA in TLS_ECDHE_ECDSA?

The curve for the ECDSA part depends on the certificate used. The key in the certificate is static while the ECDH keys are ephemeral. So it's likely that shorter curves are used for ECDH than ECDSA. There isn't a direct connection between the two in the protocol, so although the same curve may be used, it's certainly not a given.

However regarding the usage in browsers is there any difference between the curves used in ECDHE and ECDSA?

No, there probably is not. As the key establishment and certificate verification is likely to be in the same crypto API it is pretty likely that the same curves are supported (or not).

Do browsers support the same curves for every elliptical curves algorithm?

That's pretty likely because of the same reasons.

Do they possibly even always used the same curve for ECDHE and ECDSA in TLS_ECDHE_ECDSA?

The curve for the ECDSA part depends on the certificate used. The key in the certificate is static while the ECDH keys are ephemeral. So it is likely that shorter curves are used for ECDH than ECDSA. There is not a direct connection between the two in the protocol, so although the same curve may be used, it is certainly not a given.

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source | link

However regarding the usage in browsers is there any difference between the curves used in ECDHE and ECDSA?

No, there probably isn't. As the key establishment and certificate verification is likely to be in the same crypto API it's pretty likely that the same curves are supported (or not).

Do browsers support the same curves for every elliptical curves algorithm?

That's pretty likely because of the same reasons.

Is they possibly even always used the same curve for ECDHE and ECDSA in TLS_ECDHE_ECDSA?

The curve for the ECDSA part depends on the certificate used. The key in the certificate is static while the ECDH keys are ephemeral. So it's likely that shorter curves are used for ECDH than ECDSA. There isn't a direct connection between the two in the protocol, so although the same curve may be used, it's certainly not a given.